Chem Unit 8 - The Mole

3. _____ is the volume occupied by one mole of any gas at STP.

• Avogadro's number

• molar mass

• molar volume

• molar particles

6. Which of the following can't be an empirical formula?

• H₂O₂

• H₂O

• K₂PtCl₄

• C₃H₆O

Tags

NGSS.MS-PS1-1

8. _____ is an atom, an ion, or a molecule, depending upon the way a substance commonly exists.

• Avogadro's number

• representative particle

• formula unit

• molar particles

12. _____ is the mass of any element or compound.

• Avogadro's number

• molar mass

• molar volume

• molar particles

Tags

NGSS.HS-PS1-7

14. _____ is the percent by mass of each element in a compound.

• empirical formula

• molar mass

• molar volume

• percent composition

19. Which of the following is the meaning of STP?

• standard trusted particles

• standard trusted person

• standard temperature and particles

• standard temperature and pressure

19. Which of the following conditions are STP?

• 0^oC and 1 atm

• 25^oC and 1 atm

• 0^oC and 0.75 atam

• 25^oC and 0.75 atm

23. _____ is the number of grams or amus for any element and is an average of all of the isotopes of that element that exist in nature.

• molar volume

• molar mass

• atomic mass

• molar particles

Tags

NGSS.HS-PS1-7

24. How many representative particles are equal to one mole?

• 6.02 x 10²⁴

• 22.4

• 6.02 x 10²³

• 24.4

25. _____ is the SI unit to measure the amount of a substance.

• mole

• molar mass

• molar volume

• Avogadro's number