Molar Mass and Avogadro's Number

What is the mass of 0.89 mol of CaCl₂?

• 111 grams

• 0.008 grams

• 98.9 grams

• none of the choices

What is Avogadro's number?

Tags

NGSS.HS-PS1-7

How many formula units are in 315g of zinc perchlorate?

• 19

• 1.1919

• 7.18x10²³

• 7.18x10²⁵

What is the molar mass of CH₃OH? (Two decimal places, not units)

What is the molar mass of CuSO₄? (Two decimal places, no units)

What is the molar mass of CCl₄? (Two decimal places, no units)

What is the molar mass of Fe(NO₃)₂? (Two decimal places, no units)

How many molecules are in a mole of methane, CH₄?

• 5

• 16.05

• 6.022 x 10²³

How many atoms are in a mole of neon?

• 10

• 20.18

• 6.022 x 10²³

The molar mass of an element is equal to its...

• Atomic mass

• Atomic number

• Oxidation number

• Valence electrons