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5 answers

True.

Jenny: I was thinking the same thing about empirical formulas when I read the question, but the way the question is phrased, the answer is true. because it "can" tell the number of atoms in a molecule or a compound.

2007-12-16 07:41:14 · answer #1 · answered by mcalhoun333 4 · 0 0

False: a formula can tell the number if it is a *molecular* compound (only non-metals), but not if the compound is ionic. Ionic compounds show the empirical formula (lowest whole number ratio.)

2007-12-16 15:42:24 · answer #2 · answered by Jenny 2 · 0 0

yes eg, O2 is 2 atoms so yeah BUT empirical formula doesn't it tells you the lowest ratio of atoms in a compound, molecular formula tells you the exact amount of atoms

2007-12-16 15:40:54 · answer #3 · answered by LoVE LiFE 3 · 0 0

True.

H2O

There are two molecules of Hydrogen.

Each molecule contains 6.022 x 10^23 atoms

2007-12-16 15:42:04 · answer #4 · answered by Anonymous · 0 0

True!!!!

e.g.
CaCO3 the formula for calcium carbonate (limestone)
This formula tells us that it contains:-
1 atom of calcium
1 atom of carbon
3 atoms of oxygen.

H2SO4 the formula for sulphuric acid
This formula tells us that it contains:-
2 atoms of hydrogen
1 atom of sulphur
4 atoms of oxygen.

2007-12-16 15:42:51 · answer #5 · answered by lenpol7 7 · 0 0

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