The equilibrium constant is 1.8 × 10⁻⁵ . The equilibrium equation below shows NH₄OH +H ⇌NH₄+H₂O
Calculating the equation:
Kw= 1 × 10⁻¹⁴
K= K× K` = 1.8× 10⁻⁵
How does equilibrium work?Chemical equilibrium is the state in which the reactants and products are present at concentrations that no longer tend to change over time, so that the system's properties cannot be seen to change.When the forward reaction proceeds at the same rate as the reverse reaction, this condition occurs.In most cases, the forward and reverse reaction rates are the same, not zero.As a result, the concentrations of reactants and products do not change significantly. Dynamic equilibrium is the term for such a state.Learn more about equilibrium equation:
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A block of wood measures 3.00 cm x 2.00 cm x 5.00 cm and has a mass of 22.5 grams what is it ?
Determine quantitative density of a liquid whose mass is 62 g and whose volume is 31 mL. A block or wood with the dimensions 3 cm x 2 cm x 5 cm and a heft of 22.5 g (2 g/mL)
How do you calculate a block of wood's volume?
Result for an image A timber block weighs 22.5 grammes and has dimensions of 3 cm x 2 cm x 5 cm. What is that?
It is simple to determine the volume of such a block, prism, a cylinder by multiplying the base's area by the object's height or altitude.
How is block mass determined?
Multiply the volume and density together.
You may get the mass of your object by multiplying your two numbers together. You'll notice that you end up having units of mass if you keep track of both the units as you go along (kilograms or grams). A diamond, for instance, has a volume of 5,000 cm3 and a density of 3.52 g/cm3.
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Determine quantitative density of a liquid whose mass is 62 g and whose volume is 31 mL. A block or wood with the dimensions 3 cm x 2 cm x 5 cm and a heft of 22.5 g (2 g/mL)
How do you calculate a block of wood's volume?Result for an image A timber block weighs 22.5 grammes and has dimensions of 3 cm x 2 cm x 5 cm. What is that?
It is simple to determine the volume of such a block, prism, a cylinder by multiplying the base's area by the object's height or altitude.
How is block mass determined?Multiply the volume and density together.
You may get the mass of your object by multiplying your two numbers together. You'll notice that you end up having units of mass if you keep track of both the units as you go along (kilograms or grams). A diamond, for instance, has a volume of 5,000 cm3 and a density of 3.52 g/cm3.
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PLEASE HURRY I NEED HELP, LIMITED TIME!!!!
Question- Convert 8.65 × 10^25 atoms H to its mass in grams
A. 5.26 x 10^49 g H
B. 1.45 g H
C. 1.01 g H
D. 145 g H
Answer:
Mass = 145g H
Explanation:
-First we need to convert atoms to moles :
1mole =6.022 ×10^23 atoms (The number of particles in 1 mole is called Avogadro's Number (6.0221421 x 1023))
8.65×10^23 atoms of H ×1 mol / 6.022×10^23
=1.45×10^2
=145 mol
- then convert moles to grams :
Mass in grams of H
Mass = number of moles ×molar mass for H
= 145 mol ×1 g/mol
= 145 g
A car drives down the freeway at 68 mi/hr. What is its speed in m/s?
Answer: 30.3987 m/s
you might need to round that to the nearest hundredth or tenth
Explanation:
To solve this we must be knowing each and every concept related to speed and its calculations. Therefore, 68 mi/hr in m/s is 28.9m/s.
What is speed?Speed may be defined as the distance traveled by an item in relation to the time that takes to travel that distance. In other words, it measures how rapidly an item travels but does not provide direction. The term "velocity" refers to the combination of direction and speed.
The average speed is the total distance traveled by the item in a particular time frame. A scalar quantity is average speed. The magnitude of a scalar quantity indicates that it has no direction.
Speed=Distance/Time
68 mi/hr in m/s?
68 mi/3600=0.018m mi/s×1609
=28.9m/s
Therefore, 68 mi/hr in m/s is 28.9m/s.
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What is the empirical formula for a compound that is 43. 6% phosphorus and 56. 4% oxygen?.
The empirical formula, P₂O₅, is the simplest whole number ratio to define the atoms that make up a species.
We calculate the ratio of phosphorus and oxygen atoms using the assumption that there are 100 g of unknown. There are 56.36 g of oxygen and 43.64 g of phosphorus in 100 g of material.
We divide via by each component's atomic mass:
O : 56.36 g / 16 g/mol = 3.52 mol oxygen
P : 43.64 g / 31 g/mol = 1.41 mol phosphorus
We want to get whole numbers, thus we divide through by the smallest molar quantity:
3.52. mol 1.41 mol of oxygen Equals 2.5
1 phosphorus is 1.41 mol of phosphorus.
A PO2.5 formula does us absolutely no benefit. The empirical formula is the simplest whole number ratio defining constituent atoms in a species, as we have shown, which is why. So, we only increase the ration by two to give P₂O₅ as required.
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When a student squeezes a balloon, it changes shape. In which state of matter is the substance inside the balloon?
A. It could be either a liquid or a gas, because these states can change shape.
B. It could only be a liquid, because only liquids can change shape
C. It could only be a gas, because only gases can change shape.
D. It could not be a liquid or a solid, because neither of these states can change shape.
Gases behave most ideally at ____________ temperatures and ___________ pressures.
Low pressures and high temperatures are the optimal conditions for gas behaviour. The ideal gas law [tex]PV = nRT[/tex] states that ideal gases must conform to this law.
It is only feasible if the gas is made up of several freely moving point particles that do not interact with each other and have a very small total volume. An ideal gas is one in which all collisions between atoms or molecules are completely elastic and in which there are no intermolecular attraction forces. It can be compared to a collection of perfectly hard spheres that collide but do not interact with one another in any other way. The molecules of perfect gases are not attracted to one another or repel one another.
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Why the small community of Mount Laguna, California, just 55 miles from San Diego much colder than San Diego ?
Answer: It all boils down to the two cities' proximity to the Pacific Ocean, along with wind currents and geographical location
Explanation: It is known throughout the whole scientific community that a body of water near a city produces very stable temperatures throughout the year with small dips. When it is summer, instead of San Diego boiling in the heat, the Pacific absorbs most of this heat, making the heat in the city tolerable (almost), this makes the ocean appear cold in the summer.
When it turns to winter, the heat absorbed by the ocean in the summer gets radiated making the cold in San Diego negligible. Applying this same logic to Mount Laguna, which is not near a body of water, it can be understood that it would have more extreme temp. swings.
Along with water, there is wind currents. I don't live in Mount Laguna, but I have to assume from the context you gave me that a cold wind current usually flows there, making it colder than in San Diego, which has a warm current.
The location also matters, if this town is under a valley, canyon, or mountain it could be under a shadow further decreasing the temp. more than San Diego.
Hopefully this helps, and good luck!
explain the process that creates chemical elements lighter than iron, including evidence
The process that creates chemical elements lighter than iron is known as nuclear fusion and the evidence is the fusion of carbon and helium nuclei which forms an oxygen nucleus, and so on.
What is Nuclear fusion?This is referred to as the type of reaction which is characterized by two or more atomic nuclei being combined to form one or more different atomic nuclei and subatomic particles.
It is also responsible for the creation of chemical elements lighter than iron through successive reactions and a common example is the fusion of carbon and helium nuclei to form an oxygen nucleus thereby making it the correct choice.
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It is required to make 8 grams of certain chemical compound called z. This is made from compounds w, x, and y in the ratio of 2:1:3. The compound y is itself made from w and x. To make 6 grams of y requires 4 grams of w and 2 grams of x. How much w and x is required to make the required amount of z.
From the given data of chemical compounds, 5.32 grams of W and 2.66 grams of X are needed.
The following calculation must be done to determine how much W and X is needed to make the necessary amount of Z because it takes 8 grammes of a chemical compound called Z to make it, and Z is made from compounds W, X, and Y in the ratios of 2: 1: 3 and Y is itself made from W and X, and to make 6 grams of Y requires 4 grams of W and 2 grammes of X.
8/6 = 1.33
The resulting ratio is 2.66 : 2.33 :3:99.
3.99 = w
3.99 x 4/6 = 2.66
1.33 grams of X are equal to 2.66 grams of W.
2.66 x 2 = 5.32
1.33 x 2 = 2.66
5.32 grams of W and 2.66 grams of X are therefore needed.
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What are the hottest areas of the Sun?
which product besides radiation do radioactive atoms give off when they decay?
When radioactive atoms decay, they give off alpha particles, beta particles, and gamma rays in addition to radiation.
Alpha particles are made up of two protons and two neutrons, making them similar to a helium nucleus. They have a positive charge and are relatively large and slow-moving. Beta particles are high-energy electrons or positrons, and are much smaller and faster than alpha particles. They have a negative charge. Gamma rays are high-energy electromagnetic radiation, similar to X-rays. They have no mass and no charge and are the most energetic and penetrating of the three types of particles. These particles are emitted during the radioactive decay process, and the type and amount of particles emitted depends on the specific isotope undergoing decay.
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dilute hydrochloric acid Hinc N K a) Name each of the parts labelled J, K,L,M,N and P b) State the function of each of the parts labelled L and P c) State the method of collection of the gas produced d) Describe how the gas produced could be tested for e) Write a balanced chemical equation for the reaction the gas preparation
Add dilute hydrochloric acid to calcium carbonate, bubbles of carbon dioxide gas appear.
Give an explanation of the process for making carbon dioxide gas from diluted hydrochloric acid.These are the steps in this procedure:
a) The component marked J is a heatproof mat that acts as a stable, heat-resistant basis to stop the test tube from shattering as a result of the heat produced.
A test tube is the item with the label K.
This is utilized to keep the reactants in check. The L-shaped component is a delivery tube.
through which the gas produced is piped into the delivery tube.
The M-designated component is a bung.
It serves to keep the generated gas inside the test tube.
Diluted hydrochloric acid, which is the component with the letter N, serves as the reactant that creates the gas.
A delivery tube is the component with the letter P.
It is employed to gather the gas generated.
b) The L-shaped component's job is to route the created gas into the delivery tube.
The P-shaped component's job is to collect the created gas.
c) Downward delivery is the mechanism used to collect the created gas.
This is accomplished by joining the delivery tube to the test tube and submerging the delivery tube's tip in a water beaker.
This enables the generated gas to pass through the delivery tube and into the water-filled beaker.
d) A burning candle or a glowing splinter can be used to detect the gas created.
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which of these minerals would be the main component in the cement slab in your house?
The main component in a cement slab in a house is typically Portland cement.
Key points:
Portland cement is a type of hydraulic cement that is commonly used in the construction of buildings, bridges, roads, and other structures.It is made by heating a mixture of limestone and clay to high temperatures, a process known as calcination.The resulting material is ground into a fine powder, which can be mixed with water, sand, and gravel to form concrete.The concrete is then poured and leveled to form the slab.The cement reacts with water to form a paste that binds the other materials together, creating a strong and durable building material.Portland cement is also used in other types of construction, such as in the production of mortar and stucco.Other types of cement such as blended cement can be used too, depending on the requirement and the availability of the raw materials.Learn more about cement slabs here:
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predicting products of chemical reactions worksheet
Predicting the products of chemical reactions involves understanding the reactants and the type of chemical reaction taking place.
What are those reactions?
Understanding the reactants and the type of chemical reaction occurring is necessary to predict the results of chemical reactions. Synthesis, decomposition, single replacement, double replacement, and combustion are examples of common reaction types.One can apply the relevant chemical equation to anticipate the results by looking at the reactants and determining the kind of reaction that is occurring.For instance, two or more reactants unite to create a single product in a synthesis reaction. A single reactant disintegrates into several products in a decomposition process. Predicting the results of a chemical reaction requires practice and knowledge of the chemical characteristics of the components involved as well as the reactivity of the reactants.To learn more about chemical reactions refer to:
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the smallest subatomic particle that makes up an atom, and carries a negative charge
Electrons are subatomic particles that are found in the energy levels swirling around the nucleus on an electron cloud and are negatively charged.
What is meant by nucleus ?
In terms of genomics, a nucleus is the organelle within a cell that is membrane-enclosed and houses the chromosomes.The nuclear membrane contains a variety of pores that allow specific chemicals to enter and exit the nucleus in different ways.The nucleus' principal jobs include storing the cell's DNA, preserving its integrity, and assisting with transcription and replication.DNA is organized into chromosomes in the nucleus, which is located in the center of the cell.It is referred to as the cell's controller because it oversees all of the cell's operations. Nuclear membrane, nucleoplasm, and nucleolus are the three primary components of the nucleus.To learn more about nucleus refer to
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A sealable bag holds 3.79 L of
gas. How many moles of H2
gas are needed to fill the bag
at 1.0 atm and 293 K?
A sealable bag holds 3.79 L of gas. To fill the bag, 0.157 moles of H2 gas are required.
Calculating the moles:The ideal gas equation is what we use to solve this problem. Additionally known as the general gas equation. This equation is used to describe a possible ideal gas. It has a few restrictions. In 1834, Benoit Paul Emile Clapeyron made the first mention of it. An empirical form is used to write the ideal gas law:
PV = n R T
where-
P = Pressure
V = volume
T = Temperature
n = The amount of substance
R = Ideal gas constant
Now we have the values of these terms as-
P = 1 atm , V = 3.79L , T = 293 K
and R = 0.0826 L/atm
For getting moles of hydrogen we can use the values of variables in ideal gas equation as -
P V = n R T
Now (1 atm) × ( 3.79L ) = n × ( 0.0826 L/atm) × ( 293K)
n = (1 × 3.79) ÷ (0.0826 x 293)
= 0.157 moles
So that the 0.157moles of H₂ gas are needed for fill the bag .
Why is it referred to as ideal gas?A hypothetical gas made up of molecules that adhere to a few rules is referred to as the ideal gas. The molecules of ideal gas do not attract or repel one another. An elastic collision with the container's walls or an elastic collision with the ideal gas molecules would be the only interaction between them.
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The manufacturer of
a new convection oven claims that his product
will bake things 25 percent faster than a con-
ventional oven that relies mainly on radiation.
How could you test this claim?
According to studies, convection ovens generally cook 25% faster than traditional ovens at a lower cooking temperature of roughly 25 degrees F, even if cooking times vary slightly between ovens.
Convection ovens, in contrast to conventional radiant (also known as thermal) ovens, include a fan that evenly distributes air inside the chamber, removing hot and cold regions.
A convection oven may cook food up to 25% more quickly than a regular oven.
Food cooks roughly 25% more quickly in a convection oven because hot air is blown directly onto it rather than merely surrounding it.
Convection ovens heat up more quickly and cook food more quickly. Thanks to some straightforward modifications to the appliance, they also cook more evenly.
All of this results in tastier baked goods, meats, and other foods.
Overall, the convection oven option is excellent if you want a crisp, rapid result, but stick with the regular oven if you want your food to retain moisture or rise before it is fully baked.
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A 298-N force acts on a 200-g object. The acceleration of the object is?
True or False: If you have two different isotopes, like Chlorine-35 and Chlorine-37, they have the same number of neutrons
True
False
Answer:
I believe the answer is True
Explanation:
I could be wrong but in order for Chlorine 35 and Chlorine 37 to be different would they have to have a different amount of electrons? I am sorry if this is wrong. I took Chemistry a few years ago.
Answer:
The number after the name 'chlorine' is called the mass number. The mass number is a tally of the number of protons and the number of neutrons in an atom's nucleus. Since all atoms of chlorine contain 17 protons, chlorine-35 and chlorine-37 differ in the number of neutrons each one has.
Explanation:
So its true lol
:)
What happens to pressure when.. *read image*
Answer:
Explanation:
the answer is B.
Suppose that you run a reaction in ethanol to form a very non-polar organic substance. how would you extract your product?
To extract a very non-polar organic substance from a reaction that is run in ethanol, one possible method would be to use a liquid-liquid extraction technique.
This involves separating the non-polar product from the polar ethanol solvent by using a non-polar solvent that is immiscible with ethanol. One common non-polar solvent that can be used for this purpose is hexane. Hexane is immiscible with ethanol and is a good solvent for non-polar compounds. To extract the product, the reaction mixture is first cooled to separate any solid that may have formed. Then, the reaction mixture is added to a separatory funnel and the hexane is slowly added to the top of the funnel.
The two layers will separate and the hexane containing the non-polar product can be drained off the bottom of the funnel. The hexane layer is then washed with a small amount of aqueous solution (such as water or an aqueous solution of an acid or a base) to remove any remaining polar impurities and then dried over anhydrous salt (such as Na2SO4 or MgSO4) to remove any traces of water. After this process, the hexane can be evaporated to obtain the purified non-polar product.
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How many atoms are present in 2. 0 moles?.
Answer:
1.2004 x [tex]10^{24}[/tex]
Explanation:
One mole of any substance has 6.022 x [tex]10^{23}[/tex] atoms.
Setting up ratio between moles and atoms:
Moles : Atoms
1 : 6.022 x [tex]10^{23}[/tex]
2 : X
X = 2 x ( 6.022 x [tex]10^{23}[/tex] )
X = 1.2004 x [tex]10^{24}[/tex]
A sealed container can hold
6.28 L CO2 at 1.00 atm and 293 K.
How many moles of CO2 fill the
container?
Approximately 0.26 moles of CO2 fill the container.
To determine the number of moles of CO2 that fill the container, we can use the ideal gas law equation:
PV = nRT
Where:
P = pressure of the gas (1.00 atm)
V = volume of the gas (6.28 L)
n = number of moles of gas (unknown)
R = ideal gas constant (0.0821 L·atm/mol·K)
T = temperature of the gas in Kelvin (293 K)
Rearranging the equation, we have:
n = PV / RT
Substituting the given values:
n = (1.00 atm) * (6.28 L) / (0.0821 L·atm/mol·K) * (293 K)
Calculating the expression:
n = 6.28 / 24.0513
n ≈ 0.26 moles
Therefore, approximately 0.26 moles of CO2 fill the container.
It's worth noting that the answer is rounded to two decimal places, as the given values were provided with two decimal places. Additionally, the calculation assumes ideal gas behavior and that there are no other gases or impurities present in the container.
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A neutron is a subatomic particle found in the nucleus of every atom except that of simple hydrogen. The particle derives its name from the fact that it has no electrical charge; it is neutral. Its relative mass is 1u and absolute mass is 1.6×10−24g.
A neutron is a subatomic particle found in the nucleus of every atom except that of simple hydrogen. The particle derives its name from the fact that it has no electrical charge; it is neutral. Neutrons are extremely dense.
What is meant by neutron ?
Every atom's nucleus has a neutron, with the exception of plain hydrogen, which does not.The fact that the particle has no electrical charge it is neutral gives it its name. Neutrons have a very high density.Compared to positively charged protons, neutrons have a little higher mass and a neutral electric charge. Neutrons that have left a nucleus are considered to be "free" neutrons.A subatomic particle having a positive charge is called a proton.The strong nuclear force holds protons together in the nucleus of an atom. A particular subatomic particle with no charge is the neutron.Given that it is a composite particle consisting of quarks, the neutron is categorized as a hadron.To learn more about neutron refer to
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What did I do wrong and how would I do this correctly?
The mass of the hydrogen gas produced is equal to 0.368 g, not 0.322 this is wrong mass .
The reaction between calcium and water yields the following balanced chemical equation: 2 Ca + 2 H₂O → 2 CaOH + H₂
Given :that the mass of calcium is 14.7 g,
the number of moles of calcium is 14.7/40, which equals 0.3675 mol.
The number of moles of water is 11.5/18, which equals 0.638 mol.
Two moles of calcium react with two moles of water.
Calcium is therefore a limiting reagent.
What is the chemical equation?The mass of 0.1838 mol of hydrogen gas is 0.368 g, and 0.3675 mol of Ca produces hydrogen gas. A balanced chemical equation is one in which both sides of the equation have the same number of atoms.
In chemistry, what is a limiting reagent?The reactant that is consumed first in a chemical reaction, also known as the limiting reagent, limits the amount of product that can be produced.
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Genetically-modified organisms (gmos) are currently being developed for agriculture. Currently commercialized gm crops in the u. S. Include soy (94%), cotton (90%), canola (90%), sugar beets (95%), corn (88%), and hawaiian papaya (more than 50%). The use of gmo crops can reduce agricultural costs to farmers and provide greater crop-yields, possibly helping with issues of food shortages. Although this sounds great, there is still a lot of controversy around the use of gmos. Which of these is a valid argument on why we should not use gmos in our food?.
Although this sounds fantastic, there is still a lot of debate around the usage of GMOs, and there are good reasons why they shouldn't be used in food, as suggested by Option D, because there isn't enough data on the long-term impacts of consuming GMOs.
What is the GMO debate about?The GMO debate centres on genetic material that has been purposefully altered using genetic engineering techniques for improved production, disease resistance, etc. It is unclear at this time whether these modifications are safe for ingestion by humans or the environment. Long-term study should be required for this because some studies have found GMO to be hazardous, such as causing diabetes, while others have found it to be beneficial.
Because there isn't enough data on the long-term effects of consuming GMOs, as Option D says, there is still a lot of controversy around the usage of GMOs and good reasons why they shouldn't be used in food.
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Complete Question -
Genetically-Modified Organisms (GMOs) are currently being developed for agriculture. Currently commercialized GM crops in the U.S. include soy (94%), cotton (90%), canola (90%), sugar beets (95%), corn (88%), and Hawaiian papaya (more than 50%). The use of GMO crops can reduce agricultural costs to farmers and provide greater crop-yields, possibly helping with issues of food shortages. Although this sounds great, there is still a lot of controversy around the use of GMOs. Which of these is a valid argument on why we should not use GMOs in our food?
A) GMOs do not have any nutritional value
B) GMO crops are always more expensive to buy
C) GMO crops are invasive and take over the habitat of local crops
D) there is not enough research on long-term effects of eating GMOs
Atoms to grams. How many grams of KNO3 are in
2.98 x 10 22 atoms of KNO3?
Answer:
4.949 g
Explanation:
One mole of any substance has 6.022 x [tex]10^{23}[/tex] atoms or particles.
Setting up ratio between moles and atoms:
Moles : Atoms
1 : 6.022 x [tex]10^{23}[/tex]
X : 2.98 x [tex]10^{22}[/tex]
X = (2.98 x [tex]10^{22}[/tex])/(6.022 x [tex]10^{23}[/tex])
X = 0.049 moles
The molar mass of KNO3 is : 39 + 14 + ( 16 x 3 ) = 101 g/mol
Moles : Mass
1 : 101
0.049 : X
X = 0.049 x 101
X = 4.949 g
is 0.5 of ammonia alkanoic acid weighs 44 g determine the molecular formula and the name of the acid
The molecular formula and name of the acid would be [tex]C_4H_8O_2[/tex] and butanoic acid respectively.
Molecular formula of alkanoic acidsThe number of moles of the alkanoic acid is 0.5 mol and the mass of the acid is 44g. We can use this information to determine the molar mass of the acid as follows:
Molar mass = mass/mole = 44/0.5 = 88 g/mol
The alkanoic acid with a molar mass of 88 g/mol is butanoic acid.
[tex]C_4H_8O_2[/tex] = (12x4) + (1x8) + (16x2) = 88 g/mol
In other words, the name of the mono alkanoic acid is butanoic acid and the molecular formula is [tex]C_4H_8O_2[/tex].
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If 0.5 mol of mono-alkanoic acid weighs 44 g determine the molecular formula and the name of the acid
A general formula for a double-displacement reaction is written as:
General formula of double displacement reaction is:
AB + CD = AD + BC where AB and CD are the displaced reactants.
A double displacement reaction occurs when two reactants exchange ions to form two new compounds. Double displacement reactions usually result in the formation of a precipitate as a product.
Precipitate is typically formed as a result of a double displacement reaction.
The two types of bonds that exist between the reactants can be covalent on ionic in nature.
The other name for a double displacement reaction is salt metathesis reaction. It is an exchange reaction, or we can say a double decomposition reaction when one or more of the reactants does not dissolve in the solvent.
The simplest way to identify a double displacement reaction is to see if the cations exchanged anions with each other. If the states of matter are mentioned, look for aqueous reactants and the formation of a single solid product.
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What is the limiting reagent when 16 grams of ch4 is reacted with 64 grams of o2? what remains after the reaction?.
From the given reaction, Oxygen serves as the limiting reagent. Methane remains after the reaction.
What is a limiting reagent?A reactant that is completely consumed at the end of a chemical reaction is known as the limiting reagent. Since the reaction cannot proceed without this reagent, the amount of product that can be produced is constrained.
Because its quantity restricts the number of products that can be generated, the reagent that is totally consumed or reacted is known as the limiting reagent.
CO₂ + 2H₂O ⇒ CH₄+ 2O₂
One mole of methane will totally react with two moles of oxygen to produce one mole of CO₂ and two moles of water, according to the stoichiometric equation given above.
64g of oxygen and 16g of methane will totally react in such case.
When methane is burned, the weight ratio of the reactions between CH₄ and O₂ is (16:64)=1:4.
Only 32 g of oxygen are provided in the question, though. Since we only have 32 when 64 is divided, oxygen will be the limiting reagent in this scenario.
Oxygen serves as the limiting reagent.
Methane is the extra reagent.
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