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7) How many grams of NH3 are needed to provide the same number of molecules as...

7) How many grams of NH3 are needed to provide the same number of molecules as in 0.55 g of SF6?

mass of NH3: __g

10) A sample of trifluoroacetic acid, C2HF3O2, contains 51.7 g of carbon. Calculate the mass of the trifluoroacetic acid sample. mass: __g

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