Mole Calculations

How many molecules are in 2.5 mol of NaCl?

• 1.51x10²⁴
• 146
• 4.15
• 1.5x10²⁴

How many particles are in 13.5 grams of beryllium?

• 1.50 particles

• 9.02 particles

• 4.01x10²³ particles

• 9.02x10²³ particles

What is the mass of 3.01 x 10²² atoms of magnesium?

• 1.22 grams
• 1.215 grams
• 1.2 grams
• 1.22x10⁴⁶ grams

Tags

NGSS.HS-PS1-7

How many water molecules are in 5.2 moles of dihydrogen monoxide?

• 6.022 x 10²³

• 5.2

• 3.1 x 10²⁴

• 0.29

How many moles are in 98.3 g of aluminum hydroxide Al(OH)₃?

• 78.01 mol

• 1.26 mol

• 6.60 mol

• 7.59x10²³ mol

How many grams are in 1.2 x 10²⁴ molecules of CO?

• 28 grams

• 56 grams

• 6.0 grams

• 1.2 grams

How many moles are in 19.82 g Mg?

• 1.226mol Mg

• 481.7mol Mg

• 1.000mol Mg

• 0.8153 mol Mg

How many grams are in 1.2 x 10²⁴ atoms of C?

• 28 grams
• 24 grams
• 6.02 grams
• 1.2 grams

Tags

NGSS.HS-PS1-7

How many grams are in 3.3 mol of potassium sulfide?

• 360 g

• 450 g

• 364 g

• 454 g

Tags

NGSS.HS-PS1-7

How many molecules of sugar (C₆H₁₂O₆) are in one mole?

• 24 molecules

• 180 molecules

• 180 g

• 6.022 x 10²³ molecules