What is the molar mass of barium perchlorate Ba(ClO₄)₂

• 189.90 g/mol

• 240.24 g/mol

• 272.24 g/mol

• 336.20 g/mol

• 304.24 g/mol

A sample of copper weighing 6.93 g contains how many moles of copper atoms?

• 9.17 mol

• 0.0645 mol

• 0.0645 mol

• 1.09 mol

• 6.56 x 10²² mol

What is the mass of 0.75 moles of (NH₄)₃PO₄?

• 0.0044 g

• 110 g

• 74 mole

• 91 g

• 25 mole

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

• 74.1 g/mole

• 57.1 g

• 58.1 mole

• 57.1 mole/g

• 74mole

ow many moles of sulfur are in 53.7 grams of sulfur?

• 3.5 moles of sulfur

• 1.06 moles of sulfur

• 2.89 moles of sulfur

• 1.67 moles of sulfur

How many moles are 454 grams of iron (Fe)?

• 25,333 moles

• 398.2 moles

• 8.14 moles

• 814 g

• 456 moles

Find the mass in grams of 0.75 moles of magnesium (Mg).

• 32 grams

• 2.21 x 10 ^23 grams

• 18 grams

• 25 grams

• 84 grams

Which has a larger molar mass in one mole: Al or Cl?

• Al

• Cl

• they're the same

• You can't guess that without more information

How many grams are in 3.5 moles of calcium?

• 140.4 grams

• 0.0873 grams

• 11.5 grams

• 43.6 grams

How many moles of water are there in 24.3g of water?

• 2.16 mol

• 1.35 mol

• 3.35 g

• 1.65 mol/g

• 2.16 g/mol