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George determines the mass of his evaporating dish to be 6.991 g. He adds a solid...

George determines the mass of his evaporating dish to be 6.991 g. He adds a solid sample to the evaporating dish, and the mass of them combined is 12.232 g. What must be the mass of his solid sample? Express your response to three digits after the decimal.

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Answer #1

Answer – We are given mass of evaporating dish = 6.991 g

Mass of solid sample + evaporating dish = 12.232 g

So mass of solid sample = (Mass of solid sample + evaporating dish) - mass of evaporating dish

                                     = 12.232 g – 6.991 g

                                     = 5.241 g

So, the mass of his solid sample must be 5.241 g

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