2006-07-24 06:54:20 · 3 answers · asked by menen d 1 in Science & Mathematics ➔ Chemistry
Well it's CHCl3 to be exact, lowercase L.
So you've got 1 C, 1 H, and 3 Cl's.
Carbon weighs 12.011 g/mol. Hydrogen is 1.008, and chlorine is 35.453.
So the total mass of your molecule is 1*12.011 + 1*1.008 + 3*35.453 (add together the weights for each atom) = 119.378 grams per mole.
To find the percent by mass of each element, divide each part by the whole. Carbon would be 1*12.011 (the mass of just the carbon) / 119.378 (the total mass of the molecule) = .1006, or 10.06%.
Repeat for the other atoms: divide 1*1.008 and 3*35.453 by the total mass.
2006-07-24 07:01:15 · answer #1 · answered by geofft 3 · 0⤊ 0⤋
1 Carbon 12
1Hydrogen 1
3 Chlorine 35*3=105
105+1+12 = 117
then take the percentages of each one
2006-07-24 18:27:22 · answer #2 · answered by countrygirlzrule 2 · 0⤊ 0⤋
Count the separate masses:
carbon: 12.0 per atom
hydrogen: 1.0 per atom
chlorine: 35.4 per atom; 106.2 in total.
total: 119.2
now calculate the ratios
C: 12/119.2 = 10.07%
H: 1/119.2 = 0.84%
Cl: 106.2/119.2 = 89.09%
2006-07-24 15:17:40 · answer #3 · answered by dutch_prof 4 · 1⤊ 0⤋