Moles, mass, and molar mass

How many moles are in 15g of lithium?

• 104 mol
• 2.2 mol
• 0.46

How many grams are in 2.4mol of sulfur?

• 0.075g
• 77g
• 6.2x10²g

Tags

NGSS.HS-PS1-7

How many moles are in 22g of argon?

• 0.55mol
• 1.8mol
• 8.8x10²mol

How many grams are in 11.9mol of chromium?

• 0.229g
• 4.37g
• 618g
• 619g

What is the molar mass of Mn₂Se₇?

• 542.50 g/mol
• 601.34 g/mol
• 662.60 g/mol

What is the molar mass of ammonium sulfate?

• 114.12 g/mol
• 132.17 g/mol
• 209.27 g/mol
• 2.32x10⁵ g/mol

How many moles are in 98.3 g of aluminium hydroxide?

• 0.794 mol
• 1.26 mol
• 2.23 mol
• 7.67x10³ mol

Tags

NGSS.HS-PS1-7

How many grams are in 2.3x10^-4 mol of calcium phosphate?

• 0.031 g
• 0.071 g
• 0.084 g
• 5.9x10⁵ g

How many grams are in 3.3 moles of potassium sulfide?

• 21.6 g
• 33 g
• 235 g
• 3.6x10² g

Tags

NGSS.HS-PS1-7

What is the identity of an unknown polyatomic element, which has 0.0404 mol of molecules in 5.00 g?

• Sulfur
• Phosphorous
• Chlorine
• Antimony

Tags

NGSS.HS-PS1-7