Option (a) is correct. Magnesium phosphate is an ionic compound having the formula [tex]Mg_{3} (PO_{4} )_{2}[/tex] .
The Ionic compounds are the type of chemical compound where the oppositely charged ions of a metal and a nonmetal are attracted to each other to form an ionic bond. The compound formed from the bonded ions have different properties from the elements that make up the compound. Ionic compounds containing basic ions hydroxide (OH−) or oxide (O2−). These are classified as bases. Ionic compounds can be formed by acid–base reactions. Ionic compounds can be produced from their constituent ions by evaporation of the solvent, precipitation, freezing and a solid-state reaction. It can form by the electron transfer reaction of reactive metals with reactive non-metals.
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he cover slip was lifted and drops of 10% nacl were added. the photograph on the right side shows the changed appearance of the cells. the observed appearance after adding the nacl is best explained by:
The observed appearance of the cells after adding the 10% NaCl is likely due to the hypertonicity of the solution.
hypertonicity refers to a solution that has a higher solute concentration than the cell, causing water to flow out of the cell and the cell to shrink and become dehydrated. This can also be observed as the cells appear to be wrinkled and contracted.This can cause water to move out of the cell due to osmosis, resulting in the cell becoming dehydrated and shrinking. This is the opposite of hypotonicity, which is a solution with a lower solute concentration, causing water to move into the cell, causing the cell to swell. In biological systems, hypertonicity can cause cells to lose function or even die if the condition is severe or prolonged.
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Write the balanced net ionic equation for the precipitation of zinc phosphate from aqueous
solution:
Include states of matter in your answer.
The precipitation of zinc phosphate from aqueous solution:
Zn2+ (aq) + SO42- (aq) = Zn3(PO4)2 (s)
What is precipitation?The process of precipitation is the formation of a solid from ions and chemical species dissolved in an aqueous solution. When this solid forms, it sinks to the bottom of the solution and remains there rather than remaining suspended. Filtration can be used to further separate the precipitate from the solution.
When two ionic compounds react, the one containing zinc ions and the other containing phosphate anions, the result is the precipitate zinc phosphate. The interaction between those two ionic compounds would be a precipitation reaction, which entails the dissociation of the two ionic compounds in the solution, followed by the bonding of zinc ions and phosphate ions and precipitation.
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Please help!
When vinegar and baking soda react with
each other in a sealed bag, a gas is
produced. The gas is trapped and the bag
inflates. Which of these procedures would
be best for determining the minimum
amounts of vinegar and baking soda
needed to completely inflate the bag?
JUse different-sized bags, the same
temperature, and the same amounts
of each substance.
K Use different-sized bags, different
temperatures, and the same amounts
of each substance.
L Use the same-sized bags and the
same temperature, and change the
amounts of each substance.
M Use the same-sized bags and
different temperatures, and change
the amounts of each substance.
When vinegar and baking soda react with each other in a sealed bag, a gas is produced. The gas is trapped and the bag inflates. Use the same-sized bags and different temperatures, and change the amounts of each substance. so, option(M) is correct.
What is temperature?
Temperature is a gauge for an object's average particle kinetic energy. The mobility of these particles rises along with the temperature. With a thermometer or a calorimeter, temperature is measured.
What is substance?
Chemical elements and their natural or artificially created compounds are considered substances. A chemical reaction is typically required to create a substance during a manufacturing process.
Therefore, When vinegar and baking soda react with each other in a sealed bag, a gas is produced. The gas is trapped and the bag inflates. Use the same-sized bags and different temperatures, and change the amounts of each substance. so, option(M) is correct.
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Which substance has a molar mass of 95.2g?
AlCl3
BaCl2
P2O5
MgCl2
The substance which has a molar mass of 95.2 grams is MgCl₂ or magnesium chloride.
What is molar mass?
Molar mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molar mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.
The molecular mass and formula mass are used as synonym for the molar mass.It does not depend on the amount of substance which is present in the sample.It has units of gram/mole.
Molar mass of magnesium chloride is calculated as, 24.2+(35.5×2)=95.2 g.
Thus, the substance which has a molar mass of 95.2 grams is MgCl₂ or magnesium chloride.
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Which of the following compounds contains the greatest percent by mass of nitrogen?
(A) NH3
(B) HCN
(C) N2O
(D) NI3
NH3 contains the greatest percent by mass of nitrogen.
What is nitrogen?
All living things require the element of nitrogen. It is a colorless, odorless and tasteless gas that makes up 78% of the Earth's atmosphere. Nitrogen is found in all organic molecules, including proteins, nucleic acids, and other essential molecules for life. Nitrogen is essential for plant growth and is a key component of the nitrogen cycle. Nitrogen is important to the production of fertilizers and is used in industrial processes such as steel making and welding. Nitrogen also plays an important role in the environment, as it is part of the ozone layer and helps to reduce the amount of UV radiation that reaches the Earth's surface. Nitrogen is also used in many medical and pharmaceutical products, such as anesthetics and chemotherapy drugs
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How many molecules are in 8.5 moles of carbon dioxide (CO2)?
According to the Avogadro's number, there are 51.22×10²³ molecules in 8.5 moles of carbon dioxide.
What is Avogadro's number?Avogadro's number is defined as a proportionality factor which relates number of constituent particles with the amount of substance which is present in the sample.
It has a SI unit of reciprocal mole whose numeric value is expressed in reciprocal mole which is a dimensionless number and is called as Avogadro's constant.It relates the volume of a substance with it's average volume occupied by one of it's particles .
Number of atoms can be calculated using Avogadro's number as follows: mass/molar mass×Avogadro's number and number of molecules= number of moles×Avogadro's umber= 8.5×6.023×10²³=51.22×10²³ molecules.
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weak bonds, such as hydrogen bonds and van der waals forces, interacting between the r groups dna determines the order of the amino acids, the amino acids are held together by peptire bonds hydrogen bonds between the amino and the carboxyl group of different amino acids
Amino acids are held together by an amide bond, which is also called the peptide bond.
An amino acid is an organic molecule that is made up of a basic amino group (−NH2), an acidic carboxyl group (−COOH), and an organic R group (or side chain) that is unique to each amino acid. The term amino acid is short for α-amino [alpha-amino] carboxylic acid.
the interactions among R groups creates the complex three-dimensional tertiary structure of a protein. The nature of the R groups found in the amino acids involved can counteract the formation of the hydrogen bonds described for standard secondary structures.
Van der Waals (dispersion) forces contribute to interactions of proteins with other molecules or with surfaces.
correct and complete question is :
Describe the term peptide bond and its interaction between R group and How do van der Waals interactions affect Protein structure ?
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identify the hybridization state, molecular geometry and approximate bond angle around the sulfur atom for the following molecule
The hybridization state around the sulfur atom is sp2. The molecular geometry is bent/angular, and the approximate bond angle around the sulfur atom is 120°,SO2.
What is the molecular ?
Molecular is a term used to describe the smallest particle of a substance that still has all the properties of that substance. It is made up of atoms, which are the building blocks of all matter. Atoms can bond together to form molecules, which are the smallest units of a chemical compound. Molecules are the basic units of all matter, and they can exist in different forms, such as solid, liquid, and gas. The structure of a molecule can be determined through various methods, such as spectroscopy and X-ray crystallography. By studying the molecular structure of a compound, scientists can better understand its properties and how it behaves in different situations.
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A charged particle creates a(n) _____________field. Once this particle is in motion, this creates a(n) ____________ field.
Explain.
Answer: 1 Electric Field and
2 magnetic field
Explanation: Have a nice day
What is the mass, in grams, of 9.56 x 1024 molecules of methanol (CH3OH) ?
Explanation:
Step (1) : find number of moles of (CH3OH)
[tex]moles = \frac{number \: of \: molcule}{6.022 \times {10}^{23} } \\ = \frac{9.56 \times {10}^{24} }{6.022 \times {10}^{23}} \\ = 15.8[/tex]
Step (2): find mass of (CH3OH)
[tex]mass \: = moles \times molecules \: mass \: of \:(CH3OH) \\ = 15.8 \times 32.04 \\ = 506.2g[/tex]
Ao, answer is 506.2 g (approx 506g)
What is the final temperature (in °C) of 690.1 g of water
Answer:
32C Is the water hot or cold?
Explanation:
The final temperature of 690.1 g of water is 20.024°C.
To find the final temperature of 690.1 g of water, we need to know the initial temperature and the amount of heat added to the water. Water has a specific heat capacity of 4.184 J/g°C.
Here is an example calculation:
Let's say the initial temperature of the water is 20°C and we add 100 J of heat. To find the final temperature, we can use the equation:
q = mcΔT
where q is the heat added, m is the mass of the water (690.1 g), c is the specific heat capacity of water (4.184 J/g°C), and ΔT is the change in temperature.
Solving for ΔT:
ΔT = q / (mc)
ΔT = (100 J) / (690.1 g × 4.184 J/g°C)
ΔT = 0.024°C
We multiply the original temperature by the temperature change to obtain the final temperature:
final temperature = initial temperature + ΔT
final temperature = 20°C + 0.024°C
final temperature = 20.024°C
So the final temperature of 690.1 g of water is 20.024°C.
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Say the acid solution is currently in equilibrium. How would diluting the acid by adding water change the equilibrium position? Le Chatelier's Principle says pure liquids like water do not affect the equilibrium position. Using the equilibrium constant, it is easy to show the reaction should shift towards the right, but how can we show that with Le Chatelier's Principle?
Pure liquids, such as water, have no influence on the equilibrium position, according to Le Chatelier's Principle. It is straightforward to show that the response should shift to the right.
The equilibrium constant is used. According to Le Chatelier's Principle, the system will adjust to changes in focus. The concentration of an acid is often expressed as moles per liter. Increase the amount of solvent (water) on the reactant side of the equation to dilute the in equilibrium acid solution, pushing the system to adapt. I'm a little baffled by the final portion of your request. Pure liquids, such as water, have no influence on the equilibrium position, according to Le Chatelier's Principle. It is easy to illustrate that the reaction should shift to the right. Le Chatelier's Principle is incorporated into the equilibrium equation. If I wanted to show how the system works.
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microkinetic analysis of oxygen evolution performance at various stages of iridium oxide degradation
Describe the ecosystem process of oxygen evolution at various stages of iridium oxide degradation?
Oxygen evolution is the process by which oxygen gas is released into the atmosphere. This process occurs during the degradation of iridium oxide, a common type of corrosion-resistant material.
What is the atmosphere?
The atmosphere is the collection of gases that surround and are held in place by the Earth's gravitational pull. It is composed mostly of nitrogen and oxygen, and also contains small amounts of water vapor, carbon dioxide, argon, and other trace gases. The atmosphere plays a vital role in sustaining life on Earth, as it maintains temperatures, regulates climate, and shields the planet from harmful radiation. It also provides oxygen for respiration and helps to disperse pollutants into the environment. The atmosphere is constantly in motion, with winds, storms, and other weather patterns changing its composition and distribution. Human activities such as burning fossil fuels are altering the atmosphere, causing climate change and other environmental problems.
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metals are excellent conductors of electricity. nonmetals are poor conductors of electricity and are called insulators. some elements have the ability to conduct electricity roughly between that of metals and nonmetals. give some examples of these elements, and name the class they belong to
Examples of elements that conduct electricity between that of metals and nonmetals are carbon, silicon, and germanium.
What is electricity?Electricity is a form of energy that is created when electrons move from one atom to another. It is a form of energy that can be used to power a variety of appliances, from lights to computers to refrigerators. Electricity is created when electrical charges move through a conductor, such as a wire. It can also be stored in batteries for later use. Electricity can be very dangerous and should always be handled with care.
These elements belong to a class called semi-conductors. Semi-conductors are materials that can be manipulated to allow them to either conduct or insulate electricity depending on their application. They are an integral part of many electronic circuits, whether it be for computers, phones, or other electronic devices. Semi-conductors are also used in photovoltaic cells, which are used to convert solar energy into electricity.
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calculate the change in heat for the water. show all calculations. (hint: you must use the heat energy equation here: heat energy
The difference in the thermal energy of the water is 334,56 J. Thermodynamics and Heating The total energy of all the molecules that compose up anything is what is known as heat energy.
Heat is the energy that inevitably transfers from one body to another due to their disparate core temperatures. nonetheless, it is energy in action. Bond lengths and angles serve as the constant equilibrium geometries around which molecules continuously fluctuate due to rotational and vibrational motions. Pure substances are composed of molecules with a common geometrical structure. Heat is not a system's characteristic. We can use the formula Q = mcT to calculate the change in thermal energy.
Q = mc(T2 - t1)
Q = (1) 4.184 J/kg°C (80°C 20°C).
Q = 334.56 J
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The complete question is-
calculate the change in heat for the 1kg water, with initial temperature as 80°C and final temperature as 20°C. show all calculations. (hint: you must use the heat energy equation here: heat energy
Select the type of chemical bond that most commonly forms between each combination of elements as indicated.
Metallic bond → _____
Covalent bond → _____
Ionic bond → _____
Two or more metal atoms
Metal to nonmetal
Nonmetal to nonmetal
The type of chemical bond that most commonly forms between each combination of elements is Metallic bond → metallic, Covalent bond → covalent, Ionic bond → ionic.
A metallic bond is a type of chemical bond that forms between two or more metal atoms. The metallic bond is characterized by the sharing of electrons between the atoms, creating a metallic lattice structure. This type of bonding results in a strong bond that gives metals their characteristic properties such as high melting points, ductility, and conductivity.
A covalent bond is a chemical bond in which atoms share electrons. Covalent bonds typically form between nonmetal atoms and are characterized by the sharing of electrons between atoms. Covalent bonds are typically strong and result in stable compounds. They are commonly found in compounds such as water, methane and carbon dioxide.
An ionic bond is a chemical bond in which one atom loses an electron to another atom. Ionic bonds typically form between metal atoms and nonmetal atoms. Ionic bonds are characterized by the transfer of electrons, resulting in the formation of ions. Ionic bonds are typically strong and result in stable compounds, They are commonly found in compounds such as sodium chloride (NaCl) and calcium chloride (CaCl2).
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2Na + Cl2 → 2NaCl
1 mol Na = 22.990 g Na
1 mol Cl2 = 70.906 g Cl2
1 mol NaCl = 58.443 g NaCl
How many grams of NaCl could you make with 1.5 moles of Na?
a
112.45 g
b
87.665 g
c
23.125 g
d
38.962 g
pcb 3023 the nadh generated during glycolysis and the citric acid cycle feeds its high-energy electrons to which of the following?
Option (b) is correct. The NADH generated during glycolysis and the citric acid cycle feeds its high energy electron to the electron transport chain.
During Glycolysis and the citric acid cycle, the NADH and FADH2 molecules formed carry their electrons to the electron transport chain. This electron transport chain creates a proton gradient that leads to the production of a large amount of ATP. NADH are the high energy electron carrier used to transport electrons generated in Glycolysis and citric acid Cycle to the Electron Transport Chain. Glycolysis is said to be a process in which glucose is break down to produce energy. Glucose produces two molecules of pyruvate, ATP, NADH and water. Glycolysis process takes place in the cytoplasm of a cell.
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The given question is incorrect. The correct question is,
The NADH generated during glycolysis and the citric acid cycle feeds its high-energy electrons to which of the following?
(a) citric acid cycle
(b) the electron transport chain
(c) ADP
(d) H20
(e) FAD
H₂O + SO3 → H₂SO4
Why is this a synthesis reaction?
When preparing for work in the fume hood, be sure to gather all necessary tools, glassware, and chemicals
These are the safety precautions that must be taken when performing duties in the fume hood.
What is fume hood?A ventilated enclosure used to trap and exhaust vapors, gases, and nanoparticles is known as a chemical fume hood. The exhaust fan is usually located at the top of the building and draws air through the ductwork connected to the hood before exhausting it into the atmosphere.In advance to reduce the number of times the hood sash is raised and lowered while working in the fume hood, gather all necessary tools, glassware, and chemicals ahead of time. To keep the area tidy and to promote air flow, work as much as possible in the middle of the work surface. If you need to leave the experiment to get something else, lower the sash during this time.The main piece of laboratory equipment that protects laboratory workers who work with hazardous chemicals is a chemical fume hood. Fume hoods, when used properly, protect workers from inhaling chemical gases, vapors, and aerosols.The complete question:
"When preparing for work in the fume hood, be sure to gather all necessary tools, glassware, and chemicals _________ to minimize the number of times the hood sash is raised and lowered. Work as much as possible in the _________ of the work surface to keep the area tidy and promote air flow. If you need to step away from the experiment to obtain another item, _________ the sash during this time."
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label each major part and indicate you understand the process of how neurons send messages to each other.
The dendrites of the axon, labeled 1,major part that receive messages from the connecting neuron.
What is neuron?Neurons are the basic building blocks of the brain and nervous system (also known as neurons or nerve cells). Neurons are the cells in our bodies that receive sensory information from the outside world, give motor commands to our muscles, and convert and relay electrical impulses at each stage of the process.Beyond that, our interactions with them shape who we are as people. However, our approximately 100 billion neurons have close interactions with other cell types known as glia.Neurogenesis is the process by which the brain generates new neurons, which can occur in adults. To make an effective comparison, imagine a neuron as a tree. Dendrites, axons, and the cell body, or soma, are analogous to the branches, roots, and trunk of a tree.The complete question:
"This is an image of a neuron
what is the major part labeled 1?"
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If 50.5 g of KBr are dissolved in 400.0 g of water at 25.0 °C in an insulated container, a temperature change is observed. The ∆H of solution of KBr is 19.9 kJ/mol. Assuming that the specific heat of the solution is 4.184 J/(g °C), and that no heat is gained or lost by the container, what will be the final temperature of the solution?
The final temperature of the solution is 30 degrees.
What is the final temperature of the solution?We know that we can be able to obtain the heat that has been evolved or absorbed by the system by the use of the formula that says; q = mcdT
m = mass of the object
c = heat capacity
dT = temperature change
We would then have;
Number of moles of KBr = 50.5 g/119 g/mol
= 0.42 moles
Then;
19.9 * 10^3 * 0.42 moles = 400 * 4.184 * (T - 25)
8358 = 1673.6T - 41840
T = 8358 + 41840/1673.6
T = 30 degrees
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greenhouse gases include all of the following. which gas is thought to have the greatest effect on global warming or increasing global temperatures?
Greenhouse gases include carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), fluorinated gases such as hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulfur hexafluoride (SF6).
What is the Greenhouse gases ?
Greenhouse gases are a type of gases that can be found in the Earth's atmosphere which act as a blanket and trap the heat coming from the sun. These gases include water vapor, carbon dioxide, methane, nitrous oxide, ozone, and other trace gases. Greenhouse gases are what cause the Earth's atmosphere to be warmer than it would be without them. Due to human activities such as burning fossil fuels, deforestation and agricultural activities, the amount of these gases in the atmosphere has been significantly increased, leading to an increase in the Earth’s average global temperature, known as global warming. This has caused a cascade of climatic changes such as more extreme weather events and rising sea levels, which have a large impact on the environment and human activities. Reducing the emission of greenhouse gases through measures such as increasing energy efficiency, reducing the burning of fossil fuels and planting more trees, can help to reduce the effects of climate change.
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Combustion analysis is commonly used to determine the empirical formula of unknown compounds containing principally C and H. For a compound containing C, H, and O only, which of the following statements is INCORRECT?
"Combustion analysis can evaluate the molecular formula of unidentified compounds containing primarily C and H," is an incorrect statement.
Combustion analysis is a technique used to determine the amounts of carbon and hydrogen present in a compound by burning a sample and measuring the volume of gases produced. It can be used to determine the empirical formula of a compound containing C, H, and O only (which gives the ratio of atoms in a compound and not the actual number of atoms) but not the molecular formula (which gives the actual number of atoms in a compound). The molecular formula of a compound can be determined by other techniques like Mass Spectroscopy, IR spectroscopy, NMR spectroscopy etc.
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which of the following conditions is associated with an increased total ck level in the serum?
Acute or chronic (long-term) damage or degeneration to the heart, brain, or skeletal muscles may be indicated by elevated CK levels.
What circumstances lead to an increase in CK?Cardiovascular illness, trauma, motor neuron diseases, and myopathies all cause elevated CK levels. After engaging in arduous physical activity or prolonged manual labor, individuals in good health may experience a brief increase in CK levels.Acute or chronic (long-term) damage or degeneration to the heart, brain, or skeletal muscles may be indicated by elevated CK levels.You may have some degree of cardiac damage if your CK-MB levels are elevated. Acute injury or a muscular disease may be the cause of your elevated CK-MM readings, which can indicate that you have damaged skeletal muscles. Increased CK-BB levels may indicate a recent stroke or a brain damage of some kind.To learn more about elevated CK levels refer to:
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How do I fill out this chart?
Which of the following options give the correct relationships between the decimal prefixes? Select all that apply. Pay close attention to the sign and magnitude of exponent. -1 mL= 1x10^3 microliters -1GHz=1x10^6 Hz -10^3 kg=1 g -10^9 nm=1m -10ps=1x10^-13 s
The correct relationships between the decimal prefixes is 1 mL= 1x10³ mic.
What is a decimal?
The decimal system was extended to infinite decimal places to represent any real number using an infinite sequence of digits after the decimal separator (see decimal representation). In this context, decimal numbers with a finite number of non-zero digits after the decimal separator are sometimes called trailing decimals. A repeating decimal is an infinite decimal that repeats the same sequence of digits endlessly after some plac.To know more about decimals, click the link given below:
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Consider the reversible reaction
A(g)↽−−⇀B(g)
Which values would indicate that there is more B than A at equilibrium?
=1×10–5
=7000
=8×105
=0.2
Answer:
=8×105
Explanation:
This value represents the equilibrium constant, Kc, of the reaction. The equilibrium constant is a measure of the relative concentrations of reactants and products at equilibrium. If the value of Kc is greater than 1, it means that there is more product than reactant at equilibrium, and if the value of Kc is less than 1, it means that there is more reactant than product at equilibrium.
The value 8×105 is greater than 1, so it means that there is more B than A at equilibrium. =8×105.
The clouds of Jupiter are composed mostly of ammonia, NH3, formed by a synthesis reaction between hydrogen, H2, and nitrogen, N2. Assuming all of the substances are gaseous, express the law of conservation of mass quantitatively for this reaction by completing the particle model drawing.
The law of conservation of mass state in the chemical reaction the "mass neither be created nor be destroyed".
The reaction is given as :
N₂ + 3H₂ ----> 2NH₃
Law of conservation of mass means the "mass neither be created nor be destroyed".
The mass of reactant :
N₂ = 2 × 14 = 28 g
3H₂ = 3 × 2 = 6 g
N₂ + 3H₂ = 34 g
The mass of the product :
2NH₃ = 2 (14 + 3) = 34 g
The mass of the reactant is equals to the mass the product. Thus, the mass is same in the reaction.
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2K3N + 3CaCl2 → 6KCl + Ca3N2
1 mol K3N = 131.301 g K3N
1 mol CaCl2 = 110.984 g CaCl2
1 mol KCl = 74.551 g KCl
1 mol Ca3N2 = 148.248 g Ca3N2
How many grams of CaCl2 would it take to make 1.5 moles of KCl?
