Mixed Mole conversions etc.. Day 3 HW.

What are the units for molar mass?

• grams
• amu
• grams/mole
• liters

What is the molar mass of table salt (NaCl)?

• 116.886 g/mol
• 35.453 g/mol
• 22.990 g/mol
• 58.443 g/mol

How many steps are in a gram to molecule conversion?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-PS1-7

How many steps are in a gram to mole conversion?

• 1
• 2
• 3
• 4

Avogadro’s number is:

• 6.02 x 10²²

• 6

• 6.02 x 10²³

• 3.01 x 10²³

Tags

NGSS.HS-PS1-7

Determine the number of moles in 5.2 x 10²² atoms of gold.

• 0.086 mole

• 0.52 mole

• 8.63 x 10⁴⁴ moles

• 3.1 x 10⁴⁶ moles

Which compound has the smallest molar mass?

• CO

• CO₂

• H₂O

• H₂O₂

How many atoms would be contained in 454 grams of iron?

• 6.02 x 10²³ atoms

• 8.14 atoms

• 4.89 x 10²⁴ atoms

• 55.9 x 10²³ atoms

Which represents the greatest mass of sulfur?

• 1 gram of sulfur
• 1 molecule of sulfur
• 0.5 mole of sulfur
• 6.02 x 10²³ atoms of sulfur

Which conversion factor should be used to solve the following, "How many moles of argon atoms are present in 11.2 L of argon gas at STP?"

• 1 mol = 22.4 L 
• 1 mol = 39.95 g
• 1 mol = 6.02x10²³ atoms
• More than 1