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Chemistry Questions and Answers: Avogadro's Number, Molar Mass, and Gases, Study notes of Chemistry

San Diego Mesa CollegeChemistry

Answers to common chemistry questions related to avogadro's number, molar mass, and gases, including calculations for the number of atoms and molecules in given masses of substances and the volume occupied by gases at standard temperature and pressure.

Typology: Study notes

2021/2022

Uploaded on 11/19/2022

rosalind-newman
rosalind-newman 🇺🇸

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Name: Date:
Moles
About Chemistry http://chemistry.about.com
Avagadro’s Number = 6.02 x 1023 atoms/mol
1 mol of a gas at STP occupies 22.4 L
1. How many atoms of Oxygen are there in 18g of water?
2. How many atoms of Hydrogen are there in 18g of water?
3. How many molecules of H2O are there in 18g of water?
4. What is the mass of 1 mole of O2?
5. What is the mass of 1 molecule of O2?
6. What is the mass of 2 mol of H2SO4?
7. What is the density of O2 at STP?
8. 3 L of a gas weighs 2 g. What is the molecular mass?
9. What volume does 22g of CO2 at STP occupy?
10. How many atoms of Hydrogen are in 67.2 L of H2 at STP?

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Download Chemistry Questions and Answers: Avogadro's Number, Molar Mass, and Gases and more Study notes Chemistry in PDF only on Docsity!

Name: Date:

Moles

About Chemistry http://chemistry.about.com Avagadro’s Number = 6.02 x 10 23 atoms/mol 1 mol of a gas at STP occupies 22.4 L

  1. How many atoms of Oxygen are there in 18g of water?
  2. How many atoms of Hydrogen are there in 18g of water?
  3. How many molecules of H 2 O are there in 18g of water?
  4. What is the mass of 1 mole of O 2?
  5. What is the mass of 1 molecule of O 2?
  6. What is the mass of 2 mol of H 2 SO 4?
  7. What is the density of O 2 at STP?
  8. 3 L of a gas weighs 2 g. What is the molecular mass?
  9. What volume does 22g of CO 2 at STP occupy?
  10. How many atoms of Hydrogen are in 67.2 L of H 2 at STP?