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Mrrafil [7]
4 years ago
5

Based on your answer in Part A, calculate the number of atoms in this amount of 13C? Express your answer numerically in atoms of

carbon. View Available Hint(s) 2.32x1023 13 C atoms Submit Previous Answers Correct Part Based on your answer in Part B, how many electrons are in this amount of "C? Express your answer numerically in electrons. View Available Hint(s)
Chemistry
1 answer:
alexgriva [62]4 years ago
4 0

Answer:

2.32\times 10^{23} atoms of carbon-13 has 1.392\times 10^{24} numbers of electrons.

Explanation:

Number of carbon-13 atoms : 2.32\times 10^{23}

1 carbon-13 atoms has 6 electrons.

Then 2.32\times 10^{23} atoms of carbon-13 has :

=6\times 2.32\times 10^{23}

1.392\times 10^{24}

2.32\times 10^{23} atoms of carbon-13 has 1.392\times 10^{24} numbers of electrons.

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Compare a crystal lattice with a molecule. What does the formula unit Al(OH)3 tell you about the compound aluminum hydroxide?
olasank [31]
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4 0
3 years ago
Read 2 more answers
How many grams of sodium sulfate Na2SO4 (mw = 142.04 g/mol) is needed to prepare 350.0 ml of a solution having a concentration o
ch4aika [34]

According to the definition of molarity, 350 mL of a solution with a sodium ion concentration of 0.125 M requires 6.2125 g of Na2SO4 to manufacture.

<h3><u>How to find Molarity ?</u></h3>

The number of moles of a solute that are dissolved in a given volume is what is meant by the definition of molarity, which is a measurement of a solute's concentration.

By dividing the moles of the solute by the volume of the solution, molarity, also known as the molar concentration of a solution, is obtained.

Molarity = No. of moles of solute / Volume

Molarity is expressed in units mole/litre

In this case, you know that:

  • molarity= 0.125 M
  • number of moles of solute= ?
  • volume= 350 mL= 0.350 mL

Replacing in the definition of molarity:

0.125M = No. of moles of solute / 0.350l

Solving:

number of moles of solute= 0.125 M× 0.350 L

number of moles of solute= 0.04375 moles

Being 142 g/mole the molar mass of Na₂SO₄, that is, the mass of one mole of the compound, the amount of mass that contains 0.04375 moles is calculated as:

mass= 0.04375 moles× 142 g/moles

mass= 6.2125 g

In summary, 6.2125 g of Na₂SO₄ is needed to prepare 350 mL of a solution having a sodium ion concentration of  0.125 M.

To view more about concentrations, refer to;

brainly.com/question/10725862

#SPJ4

6 0
2 years ago
Oxalic acid is a diprotic acid. calculate the percent of oxalic acid (h2c2o4) in a solid given that a 0.7984-g sample of that so
vlada-n [284]
This method of quantitative determination of percent purity is titrimetric reactions. These reactions most commonly involve neutralization reactions between an acid and a base. Then, we look at the neutralization reaction:

H₂C₂O₄ + 2 NaOH ⇒ Na₂C₂O₄ + 2 H₂O

So, we do the stoichiometric calculations. The important data we should know is the molar mass of oxalic acid which is equal to 90 g/mol.

(0.2283 mol/L NaOH * 0.3798 L * 1 mol H₂C₂O₄/ 2mol NaOH * 90 g/mol H₂C₂O₄) ÷ 0.7984 g *100%
= 488%

This is impossible. The purity can't be more than 100%. Looking at our calculations and the balance reaction, all steps were done correctly. So, I think there is some typographical error in the given. The mass of the sample should be 7.984 g. Then, the answer would be 48.87% purity.
5 0
3 years ago
Read 2 more answers
A image of a drag race car has long arrow A pointing up, medium length arrow B pointing down, medium length arrow C pointing for
DochEvi [55]
<h3><u>Answer:</u></h3>

Which arrow represents the force of gravity acting upon the car?

✔ B

Which arrow represents the normal force on the car?

✔ A

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✔ C

5 0
3 years ago
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What impact can wetlands reducing flood do to future generations?
nalin [4]

Answer:

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Explanation:

3 0
3 years ago
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