Question

46) TRUE FALSE Write T'Ir the statement is true and 'Fif the statement is false. 46) The law of conservation of mass states that matter cannot be gained or lost during a chemical reaction 47) In electrolysis, electrical energy is used to drive a non-spontaneous oxidation-reduction reaction to occur 48) During an oxidation-reduction reaction, the oxidizing agent loses electrons. 49) 49) The formula mass of a compound is calculated by adding together the number of atoms that make up the compound. 50) One atomic mass unit is the same as one gram. 51) All compounds containing both oxygen and hydrogen will exhibit hydrogen bonding. 52) Metals conduct electricity well due to the mobility of the metal ions in the solid. 53) One gram of gold (atomic mass 197 amu) contains more atoms than one gram of copper (atomic mass 63.55 amu). 54) 54) The density of hydrogen gas is lower than that of uranium hexafluoride (UF) gas if both are measured at STP. 55) One mole of iron contains 6.022 1023 grams of Fe.

Answer 1

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