Question

1) How many atoms of carbon are present in 1.0 g of C6H12O6? atoms C 2)...

1)

How many atoms of carbon are present in 1.0 g of C6H12O6?

atoms C

2)

Consider samples of phosphine (PH3), water (H2O), hydrogen sulfide (H2S), and hydrogen fluoride (HF), each with a mass of 105 g. Rank the compounds from least to the greatest number of hydrogen atoms contained in the samples.

(Express your answer as a chemical formula.)

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3)

Determine the number of moles for each compound.

(Enter your answer to four significant figures.)

Compound Mass Moles
magnesium phosphate 115.2 g
calcium nitrate 469.1 g
potassium chromate 148.8 g
dinitrogen pentoxide 497.1 g
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