Mass Volume and Mole Conversions

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 is the molar mass of calcium hydroxide (Ca(OH)₂)?

• 74.1 g/mole
• 57.1 g/mole
• 58.1 g/mole
• none of the above

What is the molar mass of (NH₄)₂CO₃ ?

• 144 g
• 138 g
• 96 g
• 78 g

What is the molar mass of (NH₄)₂CO₃ ?

• 144 g
• 138 g
• 96 g
• 78 g

How many atoms are in 2.50 moles of Beryllium?

• 2.5 atmos
• 15.05 x10²³ atoms
• 4x10²³ atoms
• 1.51 x10²⁴ atoms

How many moles are in 98.3 g of Aluminum Hydroxide (Al(OH)₃)?

• 2.14 mol
• 1.26 mol
• 6.63 mol
• 5.9 mol

Tags

NGSS.HS-PS1-7

How many grams are in 3.3 mol of Potassium Sulfide (K₂S)?

• 360 g
• 454 g
• 238 g
• 132 g

Tags

NGSS.HS-PS1-7

How many moles of Hydrogen are there in 2.408 x 10²⁴ molecules of Hydrogen?

• 2.50 mol
• 4.80 mol
• 18.0 mol
• 4.00 mol

A mole of potassium chloride (KCl) contains 6.02 x 10²³ _____.

• atoms
• formula units
• ions
• molecules

What is the volume at STP of 3.5 moles of CO?

• 22.4 L
• 78.4 L
• 3.50 L
• 78.4 mL