moles to mass and mass to moles

What is the molar mass of dihydrogen dioxide (H₂O₂)?

• 48 g/mole
• 34.02 g/mole
• 36.5 g/mole
• 35.5 g/mole

What are the units for molar mass?

• grams
• amu
• grams/mole
• liters

Tags

NGSS.HS-PS1-7

What is the molar mass of B₂(CO₃)₃?

• 81.632 g/mol
• 94.842 g/mol
• 38.822 g/mol
• 201.648 g/mol

Calculate the mass of  5.0 mol of iron.

• 8.3 x 10^-24 g
• 0.090 g
• 3.0 x 10²⁴ g
• 280 g

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

What is the molar mass of (NH₄)₂CO₃ ?

• 144 g
• 138 g
• 96 g
• 78 g

What is the mass in grams of 5.90 mol C₈H_18?

• .0512 g

• 19.4 g

• 673 g

• 389 g

Tags

NGSS.HS-PS1-7

36.0 g of Be contains how many moles?

• 0.25 mol

• 4.0 mol

• 45 mol

• 320 mol

A mass of 6 g of Carbon contains

• 1 mole of C

• 2 moles of C

• 0.5 moles of C

• 72 moles of C

Tags

NGSS.HS-PS1-7

How many moles are in 16.94g of water?

• 16.94 mol H₂O

• 0.9401 mol H₂O

• 305.3 mol H₂O

• 1.063 mol H₂O