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The amount of calcium in a 15.0-g sample was determined by converting the calcium to calcium...
Naphthalene, a hydrocarbon, has an approximate molar mass of 128 g/mole. If the combustion of 64 produces 0.3599 g H20 and 2.1977 g CO2, what is the molecular formula of this compound? 3. A mass of 0.4113 g of an unknown acid, HA, is titrated with NaOH. If the acid reacts with 28.10 mL of 0.1055 M NaOH(aq), what is the molar mass of the acid? 4. The amount of calcium in a 15.0-g sample was determined by converting the...