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Java Games: Flashcards, matching, concentration, and word search. |
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Review for TEST on formula mass, % composition, empirical and molecular formulas
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| formula mass of Ba(NO3)2 | 261.35 g/mol |
| formula mass of magnesium phosphate | 262.84 g/mol |
| formula mass of iron (III) hydroxide | 106.88 g/mol |
| % composition of FeO | 69.9% Fe, 30.1 % O |
| % composition of ferric oxide | 77.7% Fe, 22.3% O |
| A 15 g sample of SnO contains 13.215 g of Sn. What is the % composition? | 88.1% Sn, 11.9% O |
| A sample contains 11.82 g of Sn and 3.18 g of O. What is the % composition? | 78.8% Sn, 21.2 % O |
| What is the empirical formula of a compound that is 38.77% Cl and 61.23 % oxygen? | Cl2O7 |
| A compound's EF = CH2O, mass = 90 g/mol. What is molecular formula? | C3H6O3 |
| 40% C, 6.7% H, 53.3% O and molecular mass =120 g/mol. What is molecular formula? | C4H8O4 |
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Western Alamance High School |
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