Moles and Mass

What is the definition of molar mass?

• number of grams per one mole of a substance

• whole number ratio that is a multiple of a chemical formula

• simplest, whole number ratio of a chemical formula

• 6.02 x 10^23 particles per one mole of a substance

Tags

NGSS.HS-PS1-7

How many grams are in 2.4mol of sulfur?

• 0.075g

• 77g

• 6.2x10²g

How many moles are in 98.3 g of aluminium hydroxide?

• 0.794 mol

• 1.26 mol

• 2.23 mol

• 7.67x10³ mol

The molar mass of calcium is 40.08 g/mol. This means that 1 mole of calcium has a mass of:

• 4.008 grams

• 40.08 grams

• 20 grams

• 20.04 grams

Tags

NGSS.HS-PS1-7

• 180 g/mol

• 160 g/mol

• 342 g/mol

• 198 g/mol

• 95.21 g/mol

• 59.76 g/mol

• 120.21 g/mol

• 84.76 g/mol

Tags

DOK Level 2: Skill/Concept

• 59.5 g/mol

• 95 g/mol

• 120 g/mol

• 145 g/mol

Tags

NGSS.HS-PS1-7

• 180.18 g/mol

• 160.16 g/mol

• 200.20 g/mol

• 220.22 g/mol

Tags

DOK Level 2: Skill/Concept

• 28.01 g/mol

• 32.01 g/mol

• 44.01 g/mol

• 48.01 g/mol

Tags

DOK Level 2: Skill/Concept