# chemistry

a candle was 27.9 grams. the mass of the candle that burned in 3 minutes was 7.2 grams.

a) How many moles of wax were in the candle before it burned ?

b) How many molecules are in the candle before it burned?

c) How many moles of wax were used up during the burning?

d) How many molecules were used up during the burning?

e) How long would it take to burn 1 mole of candle?

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1. You need to show some kind of work OR explain in detail exactly what you don't understand.

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2. how do you turn grams into moles/molecules?

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3. mols = grams/molar mass
mols = #molecules/6.022E23

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4. thank you

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