# Chemistry

a compound has an empirical formula of C3H5O2 and a molar mass of 145,14g. what is the molecular formula of this compound?

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1. empirical formula mass = 3C+5H+2O =
3*12+5*1+2*16 = 36+5+32= 73.

So 145.14/73 = 1.988. Round this to an even number (in this case 2.0) and the molecular formula is
(C3H5O2)2 or C6H10O4. That is, the molecular formula is two units of the empirical formula.

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2. YES! THANK YOU THANK YOU THANK YOU!

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3. Pls i need the answer

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4. calculate the ph solution with hydrogen ion concentration of 6.28×10^6 moldm and 1×10^-5

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