Acompound is 80.0% carbon and 20.0% hydrogen by mass. assume you have a 100.-g sample of this compound. how many grams of each element are in this sample? enter the number of grams of carbon followed by the number of grams of hydrogen, separated by a comma (e. g., 30.0,70.0).

(80.0, 20.0) The statement states that 80% of the compound is carbon. To acheive the amount of carbon in a 100 g sample, you need to multiply the weight of the sample by the percentage of carbon in the compound. Recall that 80%=80/100=.8 .8*100g=80g of carbon. The same process goes for the hydrogen. .2*100g=20g hydrogen.