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gayaneshka [121]
3 years ago
13

How many moles are equal to 13.25 g of water, H2O?

Chemistry
1 answer:
PilotLPTM [1.2K]3 years ago
7 0

Answer:

0.736 moles

Explanation:

mole = mass/molecular mass

mole of H2O = 13.25/18.0

mole of H2O = 0.736

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Oxidation number of Al(OH)4
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Explanation:

The sum of all oxidation numbers in a neutral compound is zero. The sum of all oxidation numbers in a polyatomic (many-atom) ion is equal to the charge on the ion. The oxidation number of oxygen in a compound is usually –2. The oxidation state of hydrogen in a compound is usually +1.

The oxidation state of Al in Al(OH)

4

−

x+4(+1−2)=−1

∴x=+3

The oxidation state of Mn in MnO

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y+2(−2)=0

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2 years ago
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3 years ago
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