A skin whitening cream contains an oxide of metal M. The metal oxide is reduced in a combustion tube by passing hydrogen gas through it. The result of the experiment is tabulated below.
Mass of empty combustion tube = 35.70 g
Mass of combustion tube + metal oxide (before reduction) = 39.70 g
Mass of combustion tube + metal (after reduction) = 38.10 g
Determine the empirical formula of this metal oxide. (R.A.M: O, 16; M, 48)
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The answer is MO2
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