HELP!!! Any chemisty buffs out their.....what is the molecular weigth of ethyl alcohol c2h5oh??????

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HELP!!! Any chemisty buffs out their.....what is the molecular weigth of ethyl alcohol c2h5oh??????

2007-08-30 01:56:35 · 3 answers · asked by sassy050205 1 in Science & Mathematics ➔ Chemistry

3 answers

atomic weight of carbon is 12 g/mol
AW of H is 1 g/mol
AW of O is 16 g/mol

so the MW of C2H5OH is 12*2 + 1*5 + 16*1 + 1*1 = 46 g/mol

2007-08-30 02:05:06 · answer #1 · answered by Christophe G 4 · 2⤊ 0⤋

The molecular weight of C2H5OH would be 12*2 + 1*5 + 16 + 1 = 24 + 5 + 16 + 1 = 46. You just need to multiply the atomic mass of each atom by the number of times it appears. The molecular masses of carbon, hydrogen, and oxygen are 12, 1, and 16, respectively; those three elements are common enough that you should memorize those atomic masses.

2007-08-30 02:05:47 · answer #2 · answered by DavidK93 7 · 0⤊ 0⤋

mmmh... 46

done

2007-08-30 02:51:21 · answer #3 · answered by scientific_boy3434 5 · 0⤊ 0⤋