30 C) kg 70 D) kg None of the E) Explanation: 10 kg of 4FE + 3O2 would be required to produce 10 kg of rust. This is the Law of Conservation of Matter. 19) K2O Use IUPAC nomenclature rules to properly identify this compound. potassium A) oxide dipotassium B) potassium (I) C) oxide dipotassium D) monoxide None of the E) Explanation: The correct name is It is a binary ionic compound, so no prefixes are used. potassium oxide. Since potassium is a representative metal with only one possible charge, no roman numerals are used. 20) Hydrogen peroxide is a chemical used to clean bacteria out of cuts. It does this through creating germ-eating oxygen in this decomposition reaction. What set of coefficients, respectively, balance this equation? H2O2 H2O + O2 → 1 → A) 1,2 2 → B) 2,1
C) 30 kg D) 70 kg E) None of the Explanation: 10 kg of 4FE + 3O2 would be required to produce 10 kg of rust. This is the Law of Conservation of Matter. 19) K2O Use IUPAC nomenclature rules to properly identify this compound. A) potassium oxide B) dipotassium C) potassium (I) oxide D) dipotassium monoxide E) None of the Explanation: The correct name is potassium oxide. It is a binary ionic compound, so no prefixes are used. Since potassium is a representative metal with only one possible charge, no roman numerals are used. 20) Hydrogen peroxide is a chemical used to clean bacteria out of cuts. It does this through creating germ-eating oxygen in this decomposition reaction. What set of coefficients, respectively, balance this equation? H2O2 → H2O + O2 A) 1 → 1,2 B) 2 → 2,1
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