QUIZ-3 1. What is the molar mass of aspartic acid, CO4H N? a. 43 g/mol b. 70 g/mol c. 133 g/mol d. 197 g/mol 2. What is the molar mass of Co(NO)?? a. 90 g/mol b. 121 g/mol c. 152 g/mol d. 183 g/mol 3. What is the mass of 0.0500 mole of dichlorodifluoromethane, CF Cl? a. 4.14 Ã 10 b. 6.05 g c. 12.1 g d. 24.2 g 4. How many moles are in 1.50 g of ethylamine, CHiCH2NH2? a. 0.0222 mol b. 0.0333 mol c. 90.16 mol d. 45.08 mol 5. How many iron atoms are there in 5.00 g of FeSO4? a. 5.46 x 10iron atoms b. 1.98 x 10 iron atoms c, 1.83 Ã 10-iron atoms d. 4.58 x 10 iron atoms 6. How many sodium atoms are in 3.00 g of sodium dichromate, Na2Cr20? a. 0.023 sodium atoms b. 2.82 x 10z0 sodium atoms c. 1.97 x 1021 sodium atoms d. 1.38 x 1022 sodium atoms
