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lesantik [10]
3 years ago
6

What is the percent composition of silicon dioxide, SiO2 ? (Atomic masses : O = 16 . 0 Si =28 .1

Chemistry
1 answer:
weeeeeb [17]3 years ago
4 0

Answer:

60.1 i think

Explanation:

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Cleo has a vegetable garden and wants to increase the amount of nitrogen in the soil.
gladu [14]

Answer:

The correct answer is the first option

Explanation: hope this helped

7 0
3 years ago
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"how many moles of calcium atoms are in 2.5 moles of calcium carbonate caco3"
Montano1993 [528]

Answer: -

2.5 moles of calcium atoms are in 2.5 moles of calcium carbonate CaCO₃

Explanation: -

In order to solve such types of problems, the first step would be to write the chemical formula of the compound.

The chemical formula of calcium carbonate = CaCO₃

The chemical symbol of Calcium is Ca.

From the formula of calcium carbonate we can see that

1 mole of CaCO₃ has 1 mole of Ca

2.5 mole of CaCO₃ has \frac{1 mole Ca }{1 mole CaCO₃} x 2.5 mole CaCO₃

= 2.5 mol of Ca.

∴2.5 moles of calcium atoms are in 2.5 moles of calcium carbonate CaCO₃

5 0
3 years ago
I WILL GIVE BRAINLIEST!!!!!!!!
Crazy boy [7]
0.92 HCI i think. vote 5
7 0
3 years ago
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What is the Molar mass of zinc
Darina [25.2K]

Answer:

the molar mass of zinc is 65.38u or 65.38 grams(g).

5 0
2 years ago
How does the overall charge of oxygen of -16 compare to the overall charge of oxygen -17 and oxygen -18?
nadezda [96]

Answer:

-2

The charge on an oxygen ion is -2. An oxygen atoms contain six electrons in its valence electron shell.

Explanation:

5 0
2 years ago
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