Molar Conversions Test

Which conversion factor would you use to calculate correctly the mass of 2 moles of the element titanium?

• 47.86 g Ti / 1 mol Ti

• 1 mol Ti / 47.84 g Ti

• 47.84 mol / 1 g Ti

• 47.87 g Ti / 1 mol Ti

Tags

NGSS.HS-PS1-7

Which compound has the smallest molar mass?

• CO
• CO₂
• H₂O
• H₂O₂

What is the mass in grams of 6.25 mol of Cu(NO₃)₂?

• 126 g

• 785 g

• 625 g

• 1172 g

Tags

NGSS.HS-PS1-7

What is the mass of 2.50 mol of oxygen gas O₂?

• 40 g
• 80 g
• 16 g
• 32 g

Avogadro's number of representative particles is equal to one_____.

• kilogram
• gram
• kelvin
• mole

What is the molar mass of AuCl₃?

• 96 g
• 130 g
• 232.5 g
• 303.3 g

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

• 6.02x10²³ atoms
• 8.14 atoms
• 4.90x10²⁴ atoms
• 55.85x10²³ atoms

5.11x10²³ atoms of lithium is equal to how many moles?

• 1.18
• 0.351
• 1.34
• 0.849

How many moles of nitrogen atoms are contained in one mole of Ba(NO₃)₂?

• 1

• 9

• 6

• 2

Tags

NGSS.HS-PS1-7

How many grams are in 12.3 x 10 ^-4 moles of calcium phosphate Ca₃(PO₃)₂

• 0.34 g

• 3.35 g

• 6.78 g

• 8.46 g

Tags

NGSS.HS-PS1-7