Answer:
CH2O
Explanation:
Carbon Hydrogen Oxygen
mass(g) 10.0 1.68 13.4
no. of 10/12 = 0.83333 1.68/1 = 1.68 13.4/16=0.8375
moles
ratio 0.83333/0.83333=1 1.68/0.8333≈2 0.8375/0.83333≈1
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to find number of moles, divide mass by element's mass number
to find ratio, divide number of moles of each element by the element with the smallest number of moles (in this case, carbon)
ratio will give you empirical/molecular formula, CH2O
