Moles and mass review

What is the molar mass of Al₂O₃?

• 42.981 g/mol

• 69.963 g/mol

• 101.961 g/mol

• 74.979 g/mol

What is the molar mass for (NH₄)₂O?

• 34.038 g/mol

• 52.077 g/mol

• 50.037 g/mol

• 18.034 g/mol

What is the molar mass of copper (II) nitrate?

• 187.554 g/mol

• 251.1 g/mol

• 189.096 g/mol

• 125.55 g/mol

How many grams are in 2 mol of CuCl₂?

• 2 g

• 134.446 g

• 268.892 g

• 67.223 g

How many moles are 95 g of NaCl?

• 1.63 mol

• 0.62 mol

• 5551.8 mol

• 58.44 mol

How many moles is 125 g of CH₄?

• 2005.375 mol

• 0.128 mol

• 16.043 mol

• 7.79 mol