2006-10-24 12:43:48 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
No moles. No mice, no rats, no chipmunks, or any other pests, just FeS.
2006-10-24 12:47:20 · answer #1 · answered by F. Frederick Skitty 7 · 0⤊ 0⤋
There are three steps to converting grams of a substance to moles.
Determine how many grams are given in the problem.
Calculate the molar mass of the substance.
Divide step one by step two.
The three steps above can be expressed in the following proportion:
In this particular lesson, the moles of the substance (lower left) will be the unknown (which will be signified by the letter x). The exact same proportion is used in the moles-to-grams conversion lesson. Then the "x" will reside in the upper left.
This proportion is a symbolic equation. When you solve a particular problem, you insert the proper numbers & units into the proper places of the symbolic equation and then you solve using cross-multiplication and division. Also, do not attach units to the unknown. Let it be simply the letter "x." The proper unitshould evolve naturally from soving the proportion and cancellation of units.
Make sure you have a periodic table and a calculator handy.
2006-10-24 20:06:01 · answer #2 · answered by michaelslaw 1 · 0⤊ 0⤋
The formula mass of FeS is 56 + 32 = 88 So one mole of FeS weighs 88g. The number of moles is therefore 24 divided by 88 which is 0.2727.
2006-10-24 19:51:59 · answer #3 · answered by Examiner 3 · 0⤊ 0⤋
follow mr. examiner...
he's correct
2006-10-24 20:05:01 · answer #4 · answered by teroy 4 · 0⤊ 0⤋