Mole Chemistry

What is the molar mass of Fe?

• 26 g/mole
• 55.85 g/mole
• 56 g/mole
• 6.02 x 10²³ g/mole

What is the molar mass of Ca(NO₃)₂?

• 164.03 g/mole
• 228.32 g/mole
• 150.02 g/mole
• 218.05 g/mole

How many moles are in 225 g of CO?

• 28.01 mole
• 4.82 x 10²⁴ mole
• 6,302,25 mole
• 8.03 mole

Tags

NGSS.HS-PS1-7

How many grams are in 1.5 moles of O?

• 9.03 x 10²³ grams
• 16 grams
• 24 grams
• 6.02 x 10²³ grams

How many moles are in 4.3 x 10²⁴ molecules of H₂O?

• 6.02 x 10²³
• 7.14
• 18.02
• 128.66 

How many molecules are in 100 g of C₆H₁₂O₆?

• 180.18 g
• 3.34 x 10²³
• 6.02 x 10²³
• 6.02 x 10²⁵

Find the molar mass of C₈H₁₈.

• 114 g/mol
• 26 g/mol
• 66 g/mol
• 338 g/mol

How many moles are in 3.01 x 10²² atoms of magnesium?

• 0.0500 moles
• 1.81 x 10⁴⁶ moles
• 5.00 x 10²¹ moles
• 5.00 moles

Tags

NGSS.HS-PS1-7

How many moles are in 19.82 g Mg? 

• 1.226 mol Mg
• 481.7 mol Mg
• 1.000 mol Mg
•  0.8156 mol Mg

How many carbon atoms are in 4.52 moles of carbon?

• 6.02 x 10²³ atoms
• 1.33 x 10²³ atoms
• 4.52 atoms
• 2.72 x 10²⁴ atoms