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Alenkinab [10]
3 years ago
8

25 POINTS + BRAINLIEST!!! How do you calculate the number of molecules in a substance? For example, Al2O3. (The numbers are subs

cripts) Please explain simply, to a point where a grade 9 can understand.
Chemistry
1 answer:
Scrat [10]3 years ago
3 0
You add them together

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N2 + 3H2 2NH3 How many molecules of H2 are in the reaction? molecules How many nitrogen atoms are present? atoms How many moles
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There are two H2 .There are four nitrogen atoms present. There are two NH3 formed
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The following molecular equation represents the reaction that occurs when aqueous solutions of silver nitrate and aluminum chlor
irga5000 [103]

Answer:

3Ag^(+) + 3Cl ^(-) --> 3AgCl (s)

Explanation:

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3 years ago
Which statement describes the charge of an
qwelly [4]
I think that you didn't copy the answers correctly, because 1 and 2 are the same, and 3 and 4 are also the same here.
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2Na2SO4 :How many atoms for each element are in the formula?<br><br> S=<br> O=<br> Na=
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Answer:

S=  2(1)  = 2

O=  2(4)  = 8

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Explanation:

The given compound is:

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An element is a distinct substance that cannot be split up into simpler substances.

So;

  Number of atoms of elements here are:

S=  2(1)  = 2

O=  2(4)  = 8

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6 0
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