CEOE Physical Science: The Mole Concept Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. What is the molar mass of glucose C6H12O6?

Question 2 2. What is the molar mass of Na2CO3?

Question 3 3. An expandable container is holding 0.75 moles of argon with a volume of 5.0 L. Assuming the temperature and pressure are held constant, how many moles of argon would be needed to increase the volume to 7.0 L?

Question 4 4.

A piece of copper wire contains 5 moles of copper atoms. What is its mass?

(The molecular mass of copper is 63.5 g/mol.)

Question 5 5. If we need 0.75 moles of ammonium hydroxide, how much is this in grams? The molar mass of ammonium hydroxide is 35.04 g/mol

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Question 6 6. Standard temperature and standard pressure refer to:

Question 7 7. What volume is occupied by 15.0 moles of carbon dioxide gas at standard temperature and pressure?

Question 8 8. A tenth of a mole of pennies contains how many pennies?

Question 9 9. If we have 2 moles of sodium phosphate , what is its amount in grams? The molar mass of sodium phosphate is 163.94 g/mol.

Question 10 10.

A piece of aluminum foil has a mass of 27 grams. About how many atoms does this contain?

(Aluminum has a molecular mass of 27 g/mol.)

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Question 11 11. A container has a volume of 53.9 L. Assuming it is at STP, how many moles of gas particles does it contain?

Question 12 12.

A computer chip contains 1.20 x 10^23 atoms of silicon. What is its mass?

(The molecular mass of silicon is 28 g/mol.)

Question 13 13. Avogadro's law shows the relationship between _____.

Question 14 14. What is the molar mass of NaOH?

Question 15 15.

A piece of pencil graphite (made of carbon atoms) has a mass of 0.12 grams. How many moles of carbon atoms are in the lead?

(The molecular mass of carbon is 12 g/mol.)

CEOE Physical Science: The Mole Concept Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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