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An 0.648 g sample of isobutene contains 0.556g of carbonand the rest is hydrogen. 0.5 mol of isobutene has a mass of 28.5g . what is the empirical formula and molecular formula?
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An 0.648 g sample of isobutene contains 0.556g of carbonand the rest is hydrogen. 0.5 mol of isobutene has a mass of 28.5g . what is the empirical formula and molecular formula?

User Brysgo
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The ratio of carbon atom and hydrogen atom is 0.556/12:0.092/1=1:2. So the empirical formula is CH2. The gram formula mass is 28.5/0.5=57. So the molecular formula is C4H8.
User Ack
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