Chemistry--Chapter 6

True or False: This is the correct Avogadro's Number.

• True

• False

Tags

NGSS.HS-PS1-5

NGSS.HS-PS1-7

True or False: One mole of argon has more atoms in it than one mole of neon.

• True

• False

Answer explanation

All moles have the exact same number of atoms in them---the magic number.

Tags

NGSS.HS-PS1-7

One mole of zinc contains 65.39 zinc atoms.

• True

• False

Answer explanation

One mole of zinc contains the magic number of atoms, just like a mole of any other substance. (Magic number)

65.39 is the MASS, not the number of atoms.

Tags

NGSS.HS-PS1-7

One mole of copper atoms contains Avogadro's number of copper atoms.

• True

• False

The lighter the atom, the less mass in one mole of that atom.

• True

• False

One mole of boron is equal to how many grams?

• 10.81

• 6.022 x 10 23

• 9.01

• 5

Since oxygen is a diatomic molecule, one mole of oxygen gas has a mass of ______ grams.

• 16

• 32

• 6.022 x 10 23

• 8

Answer explanation

Diatomic means (2), so you double the mass of Oxygen, which is 16, to get 32.

Tags

NGSS.HS-PS1-7

The molar mass of a compound serve as a conversion factor between grams and moles.

• True

• False

One mole of CO2 gas contains 1 mole of carbon atoms and 2 moles of oxygen atoms.

• True

• False

Tags

NGSS.MS-PS1-1

The molar mass of an element can be found on the periodic table.

• True

• False