Page No. Date Chemistry traignment Scientific Notation Covert 0.00000046 in to Scientific Notation

Answers

Answer 1

Answer:

answer is 4.6×10 with exponent 7

Answer 2

Answer:

[tex]4.6\times10^{-7}[/tex]

Explanation:

Remember that if the decimal point is to the right then the exponent is a negative.

[tex]4.6\times10^{-7}[/tex]

Move the decimal point to the left:

[tex].0.0.0.0.0.0.4.6[/tex]

[tex].0.0.0.0.0.0.4.6=0.00000046[/tex]

Hope this helps


Related Questions

A 15.0-L vessel contains 0.50 mol CH4 with a pressure of 1.0 atm. After 0.50 mol C2H6 is added to the vessel, what is the partial pressure of CH4? The temperature remains unchanged throughout the process.

Answers

Answer: Hi! The partial pressure of CH4 is

=1 atm

Explanation:

The partial pressure of methane in the mixture of methane and ethane has been 1 atm.

Partial pressure has been the pressure exerted by a gas in the solution or mixture. The partial pressure of each gas has been the total pressure of the gaseous mixture.

The partial pressure of the gas has been dependent on the volume, temperature, and concentration of the gas.

The given methane has a partial pressure of 1 atm in the 15 L vessel. The addition of ethane results in the change in the total pressure of the mixture, as there have been additional moles of solute that contributes to the solution pressure.

However, since there has been no change in the concentration and volume of methane, the pressure exerted by methane has been the same. Thus, the partial pressure of methane has been 1 atm.

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Calculate the number of molecules present in 11 moles of H2O.

Answers

Answer:

[tex]11 \times 6.022 \times {10}^{23} \\ = 66.242\times {10}^{23} \: of \: \\ water \: molecules[/tex]

Can you help me with these questions?
I already did 3 which are the highlighted ones. Help me with the ones that are not.

Answers

1.) C. Microwave, visible, gamma
4.) B. I’m pretty sure frequency increases from left to right and wavelength gets shorter

1.) A. Atomic bomb
2.) C. GPS
3.) A. FM radio
4.) B. Radar detector

It’s been like 2-3 years since I’ve done this stuff so I’m not entirely sure‍♀️

The sun, fire, lightnings and fireflies are all

Answers

Answer: Natural sources of light

please give brainliest

Answer:

Natural source of light

Explanation:

Please Mark Me Brainlest Me

#CarryOnLearning

What element is being oxidized in the following redox reaction?

Cr(OH)4-(aq) + ClO-(aq) → CrO42-(aq) + Cl-(aq)

Answers

Answer:

Cr

Explanation:

Cr goes from +3 to +6 and when it increases it means is being oxidized.

The element being oxidized in the redox reaction is Cr. Oxidation state helps to determine the amount of oxidation which an atom undergoes. An increase in oxidation state or number signifies oxidation has taken place.

A decrease in oxidation state depicts reduction has taken place. In this

scenario, the element Cr has a change in oxidation state from +3 to +6 which

signifies oxidation took place in the atoms of the element. This is why Cr will

be the right option.

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The EPA has used the slogan “Ozone: good up high, bad nearby” in some of its publications for the general public. Explain the message

Answers

Answer:

------------------------------

Explanation:

---------------

For the reaction C + O2 = CO2, if 3 grams of carbon react with the oxygen, how many grams of carbon dioxide are produced?

Answers

3gC x 1molC/12.011gC x 1molCO2/1molC x 44.011gCO2/1molCO2

This gives you 10.99267338g CO2

10 g CO2 if it is one sig fig
11.0 g CO2 if it is two sig fig

Soldium and sulphur compound form formula

Answers

Answer:

Na2S

Explanation:

hope this helps

What is your opinion of Latino immigrants in your country?

Answers

Answer:

I believe they deserve to be here.

Explanation:

Which two types of information are written in an element's box in the periodic table?

I think it is B,D

Answers

Answer:

Yes it is B,D.

Explanation:

Each box represents an element and contains its atomic number, symbol, average atomic mass, and (sometimes) name. The elements are arranged in seven horizontal rows, called periods or series, and 18 vertical columns, called groups.

How many moles of c3h6will be consumed when 4.11 mol of co2 are produced in the following equation 2c3h6 +9o2 - 6co2 + 6H2o

Answers

Answer:  a.1.37  b.4.11 c.6.00  d.12.3

Explanation:

g Element X is an element in period 4. Identify X given that in the molecule XH3. It exhibits hybridization sp3. WHat is the element

Answers

Answer:

XF3 is our compound. X is unknown For the problem I am using the periodic table at this ...

Explanation:Solution for Element X is an element in period 3. Identify X given that in the molecule XH3, it exhibits hybridization sp2 . Indicate the symbol and not ...

Two or more than two atoms with different physical or chemical properties can not combine together to form an element. The element X  in period 4 with covalency 3 is Arsenic (As).

What is element?

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same. The periodic table is divided into groups and periods. depending on the number of valence electrons and the number of outermost orbit respectively.

In the given compound XH[tex]_3[/tex], the covalency of X is 3, means the valence electrons in the outermost shell of element X is 3. The only group that have valence electron 3 is group 15  that is nitrogen family. In the fourth period of group 15 we find Arsenic element.

Therefore the element X  in period 4 with covalency 3 is Arsenic (As).

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A hydrochloric acid solution is standardized by titrating 0.2329 g of primary standard sodium carbonate to a methyl red end point by boiling the carbonate solution near the end point to remove carbon dioxide. If 42.87 mL acid is required for the titration, what is its molarity
HELP

Answers

The molarity of the acid, HCl solution is 0.103 M

We'll begin by calculating the number of mole in 0.2329 g of Na₂CO₃

Mass of Na₂CO₃ = 0.2329 g

Molar mass of Na₂CO₃ = (23×2) + 12 + (16×3) = 106 g/mol

Mole of Na₂CO₃ =?

Mole = mass / molar mass

Mole of Na₂CO₃ = 0.2329 / 106

Mole of Na₂CO₃ = 0.0022 mole

Next, we shall determine the number of mole of HCl needed to react with 0.0022 mole of Na₂CO₃

Na₂CO₃ + 2HCl —> 2NaCl + H₂O + CO₂

From the balanced equation above,

1 mole of Na₂CO₃ reacted with 2 moles of HCl.

Therefore,

0.0022 mole of Na₂CO₃ will react with = 0.0022 × 2 = 0.0044 mole of HCl

Finally, we shall determine the molarity of the HCl.

Mole of HCl = 0.0044 mole

Volume = 42.87 mL = 42.87 / 1000 = 0.04287 L

Molarity of HCl =?

Molarity = mole / Volume

Molarity of HCl = 0.0044 / 0.04287

Molarity of HCl = 0.103 M

Thus, the molarity of the acid, HCl solution is 0.103 M

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HELP ME OUT PLEASE!!!!!!!!

A chemical reaction in which calcium carbonate (CaCO3) is decomposed (broken down) results in the production of two simpler compounds. (See diagram) What mass of Calcium Carbonate (CaCO3) to the nearest hundredth of a gram, is broken down in this reaction?

A) 28 00g

B) 21979

C) 49.979

D) 50.000​

Answers

Answer:

49.979

Explanation:

How is hot spot and ring of fire similar

Answers

Answer:The plates are not fixed but are constantly moving atop a layer of solid and molten rock called the mantle. The Ring of Fire is a string of volcanoes and sites of seismic activity, or earthquakes, around the edges of the Pacific Ocean. ... A hotspot is a place in the middle of a tectonic plate where hot magma rises.

Explanation:

answer this please thank you

Answers

Answer:

6am

Explanation:

answer this please thank you

If not 6 am then maybe 10am correct me if I’m wrong though

A compound consists of 75% magnesium and 25% oxygen. Find the empirical formula.

Answers

Answer:

% Composition of elements:

Magnesium = 75%Oxygen = 25%

Atomic mass of given elements:

Magnesium = 24 gOxygen = 16 g

Now, divide % composition by Atomic mass:

[tex]\footnotesize\implies Mg = \dfrac{\% \: Composition}{Atomic \: mass} = \dfrac{75}{24} = \bf 3.125[/tex]

[tex]\footnotesize\implies O = \dfrac{\% \: Composition}{Atomic \: mass} = \dfrac{25}{16} = \bf 1.5625[/tex]

Simplest Ratio:

[tex]\footnotesize\implies Mg = \dfrac{3.125}{1.5625} = 2[/tex]

[tex]\footnotesize\implies O = \dfrac{1.5625}{1.5625} = 1[/tex]

Empirical Formula:

[tex]\footnotesize\implies \underline{ \boxed{ \red{ \bf Empirical \: Formula = Mg_2O}}}[/tex]

The empirical formula will be [tex]Mg_{2}[/tex] .

What is empirical formula?

The simplest entire number fraction of atoms contained in a chemical molecule is its empirical formula.

Calculation of empirical formula:

It is given that, composition of Mg = 75 %, composition of oxygen  = 25%.

It is known that, atomic mass of Mg = 24 g, atomic mass of oxygen = 16g.

By dividing % composition by atomic mass of given elements:

Mg = % composition / %atomic mass

= 75 / 24

= 3.125

Oxygen (O) = % Composition / atomic mass

= 25 / 1.56

Now, calculate simplest ratio of Mg and O.

For Mg = 3.125 / 1.56

= 2.

For O = 1.56 / 1.56

= 1

So, the empirical formula will be [tex]Mg_{2}O[/tex].

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Escriba un poema usando 4 de las siguientes palabras: lluvia, nieve, lluvia, granizo, tornado, huracanes, frente cálido, frente frío, alta presión, baja presión, termómetro, barómetro, anemómetro, pluviómetro, veleta o higrómetro.
plis ayúdenme porfa

Answers

Answer:

i dont speak mexican

Explanation:

Which solution has the same number of moles of KCl as 75.00 mL of 0.250 M solution of KCl?
25.0 mL of 0.175 M solution of KCl
129 mL of 0.145 M solution of KCl
20.0 mL of 0.200 M solution of KCl
50.0 mL of 0.125 M solution of KCl
100 mL of 0.0500 M solution of KCl

Answers

Answer:

None of them

Explanation:

The number of moles in 75ml is 0.01875moles while in 25ml is 0.004375 and in 129 ml is 0.018705.

REMEMBER: Molarity is the number of moles per litre so in order to get the number of moles you multiply the molarity of the substance by the quantity of the substance in litres.

129 mL of 0.145 M solution of KCl solution has the same number of moles of KCl as 75.00 mL of 0.250 M solution of KCl. Therefore, option B is correct.

What is molarity ?

Molarity is defined as the number of moles of a solute in one liter of solution. A solution's molarity is also known as its molar concentration.

To calculate the molarity of a solution, divide the number of moles of solute by the total volume of solution in liters.

Molarity is a concentration unit that is defined as the number of moles of dissolved solute per liter of solution. Molarity is expressed as the number of millimoles per milliliter of solution when the number of moles and volume are divided by 1000.

Given:

number of mol = M ×V

= 0.250 M × 0.0750 L

= 1.87 × 10^-2 mol

volume, V = 1.29*10^2 mL

= 0.129 L

use:

number of mol,

n = Molarity × Volume

= 0.145 × 0.129

= 1.87 × 10^-2 mol

Thus, option B is correct.

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which two types of food are homogeneous mixtures
A. mustard
B. mayonnaise
C. tossed salad
D. trail mix

Answers


Answer: It’s most likely Mayonnaise and mustard.
Explanation: It’s definitely mayonnaise because it’s not possible to see the different substances and for mustard it depends on what type. Hope this helps. Good luck :)

A chemical reaction involves the reactants A and B, and the product C.
A+B→C
Trial 1 2 3
[A](mol/L) 0.10 0.10 0.20
[B](mol/L) 0.10 0.20 0.10
−Δ[A]Δt(molL s) 3.08×10−9 2.464×10−8 1.232×10−8

Answers

Explanation:

a+b =ab

answer

ab added all

is give answer

PLS HELP THIS IS TO HARD PLS

Answers

The correct answer is D because they are all in the same group and all elements in the same groups as each other are always very similar.

Magnesium metal burns in air with an intense bright light according to the equation
2 Mg(s) + O2(g) → 2 MgO(s) + 1200 kJ

A.) What is the amount of energy in kJ produced when 4.5 mol of Mg is burned in the presence of excess oxygen?

Answers

The heat produced by 4.5 moles of magnesium when burnt is 2700 kJ.

A thermochemical reaction is a reaction in which the amount of heat lost or gained is included in the reaction equation. The thermochemical reaction equation for the combustion of magnesium is shown as follows;

2 Mg(s) + O2(g) → 2 MgO(s) + 1200 kJ

From the reaction equation;

2 moles of magnesium produced 1200 kJ of heat

4.5 moles of magnesium will produce 4.5 moles × 1200 kJ/2 moles

= 2700 kJ

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Write a balanced chemical equation for this reaction by completing the reaction below. Add the missing products and coefficients. Do not include phases.

Answers

To balance a chemical equation you must pay attention that the algebraic equation has the same number of element atoms in reactant and the product.

A chemical equation is a term to refer to the symbolic description of a chemical reaction, that is, the written representation of symbols. For example:

2H₂ + O₂ ---> 2H₂O

The balance of an equation can be related to the law of conservation of matter, that is, the number of atoms of each element in the reactants is in the result.

Note: This question is incomplete, because the information some information is missing.

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Silver can be plated out of a solution containing Ag+ according to the half-reaction
Ag+(aq)+e−→Ag(s)


How much time (in minutes) does it take to plate 19 g of silver using a current of 3.4 A ?

Answers

Answer:

Approximately [tex]83[/tex] minutes.

Explanation:

Look up the relative atomic mass of [tex]\rm Ag[/tex]: [tex]M({\rm Ag}) = 107.868\; \rm g \cdot mol^{-1}[/tex].[tex]\begin{aligned}Q &= e\, (n(e)) \\ &\approx 1.602 \times 10^{-19}\; \rm C \times 1.06 \times 10^{23} \\ &\approx 1.6987 \times 10^{4}\; \rm C \end{aligned}[/tex]/.

Avogadro's number: [tex]N_A \approx 6.02 \times 10^{23}\; \rm mol^{-1}[/tex].

Elementary charge: [tex]e \approx 1.602 \times 10^{-19}\; \rm C[/tex].

Calculate the quantity of [tex]\rm Ag[/tex] atoms to reduce:

[tex]\begin{aligned}& n({\rm Ag}) \\ &= \frac{m({\rm Ag})}{M({\rm Ag})} \\ &= \frac{19\; \rm g}{107.868\; \rm g \cdot mol^{-1}} \\ & \approx 0.176\; \rm mol\end{aligned}[/tex].

By the equation, it takes one electron to reduce every [tex]\rm Ag[/tex] atom. Thus, the number of electrons required to reduce [tex]0.176\; \rm mol[/tex] of [tex]\rm Ag\![/tex] atoms would be:

[tex]n(e) = n({\rm Ag}) \approx 0.176\; \rm mol[/tex].

[tex]\begin{aligned}N(e) &= n(e) \cdot N_{A}. \\ &\approx 0.176\; \rm mol \times 6.02 \times 10^{23}\; \rm mol^{-1} \\ & \approx 1.06 \times 10^{23}\end{aligned}[/tex].

Calculate the amount of charge (in coulombs) in that many electrons:

[tex]\begin{aligned}Q &= e\, (n(e)) \\ &\approx 1.602 \times 10^{-19}\; \rm C \times 1.06 \times 10^{23} \\ &\approx 16987.1 \; \rm C \end{aligned}[/tex].

A current of [tex]1\; \rm A[/tex] carries a charge of [tex]1\; \rm C[/tex] every second. Thus, the amount of time required for this current to carry that much electron would be:"

[tex]\begin{aligned}t &= \frac{Q}{I} \\ &\approx \frac{16987.1\; \rm C}{3.4\; \rm A} \\ &\approx 83.3\; \rm s \\ &\approx 5.00\times 10^{3}\; \rm s \\ &\approx 83\; \text{minutes} \end{aligned}[/tex].

How much does a cloud weigh in pounds?

Answers

Answer:

1.1 million pounds

Explanation:

Answer:

1.1 million pounds

Explanation:

that's a lot of water above us!!

Which of the following processes are spontaneous under standard conditions? Select all that apply. Multiple select question. A gas is compressed into a small volume. A soluble salt dissolves when it is mixed with water. Iron rusts when it exposed to salty water. A match continues to burns after it is lit. Water moves up into a water tower.

Answers

Spontaneous processes are processes such as;  a soluble salt dissolves when it is mixed with water, iron rusts when it exposed to salty water and a match continues to burns after it is lit.

A spontaneous process is a process that occurs without external input of energy or does not require a continuous input of energy once the process has gotten underway.

Among the options the processes which are spontaneous under standard conditions of 1 atm, 298 K and 1 M are;

A soluble salt dissolves when it is mixed with water.Iron rusts when it exposed to salty water. A match continues to burn after it is lit.

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Explain how you determine the freezing point of a solution that does not have a well-defined transition in the cooling curve.

Answers

This question is asking for a method for the determination of the freezing point in a solution that does not have a noticeable transition in the cooling curve, which is basically based on a linear fit method.

The first step, would be to understand that when the transition is well-defined as the one on the attached file, we can just identify the temperature by just reading the value on the graph, at the time the slope has a pronounced change. For instance, on the attached, the transition occurs after about 43 seconds and the freezing point will be about 4 °C.

However, when we cannot identify a pronounced change in the slope, it will be necessary to use a linear fit method (such as minimum squares) to figure out the equation for each segmented line having a significantly different slope and then equal them so that we can numerically solve for the intercept.

As an example, imagine two of the segmented lines have the following equations after applying the linear fit method:

[tex]y=-3.5 x + 25\\\\y=-0.52 x + 2[/tex]

First of all, we equal them to find the x-value, in this case the time at which the freezing point takes place:

[tex]-3.5 x + 25=-0.52 x + 2\\\\-3.5 x+0.52 x =2-25\\\\x=\frac{-23}{-2.98}=7.72[/tex]

Next, we plug it in in any of the trendlines to obtain the freezing point as the y-value:

[tex]y=-3.5 (7.72) + 25\\\\y = 1.84[/tex]

This means the freezing point takes place after 7.72 second of cooling and is about 1.84 °C. Now you can replicate it for any not well-defined cooling curve.

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A local water retention pond was found to have elevated mass concentration of mercury of 14 ng per liter. You would like to collect some mercury for your homemade perpetuum mobile machine. How many moles of mercury can you get you collect and process the entire volume of 1250 m3 of the water in the pond?

Answers

The number of moles of mercury can you get you collect and process the entire volume of 1250 m3 of the water in the pond is 8.7  × 10^-5 moles.

First, we must convert the concentration of mercury in the pond to molar concentration using the relation;

Mass concentration = Molar concentration × molar mass

Molar concentration = Mass concentration /molar mass

Molar mass of mercury = 201 g/mol

Molar concentration = 14 × 10^-9 g/201 g/mol = 6.97 × 10^-11 M

Volume of solution = 1250 m3 or 1250000 L

Number of moles = concentration × volume

Number of moles =  6.97 × 10^-11 M ×  1250000 L

Number of moles = 8.7  × 10^-5 moles

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________ are neutral particles found in the nucleus of an atom.

Answers

Neutrons is your answer my friend
The answer is Neutrons
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