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Calculate the following quantity: moles of oxygen in 150.45g of Zn(NO3)2

Question

Calculate the following quantity: moles of oxygen in 150.45g of Zn(NO3)2

check_circleAnswer
Step 1

Given:

Mass of Zn(NO3)2 = 150.45 g.

Molar mass of Zn(NO3)2 = 189.36 g/mol.

Step 2

Calculation for number of moles of Zn(NO3)2:

mass
number of moles
molar mass
150.45 g
number of moles
189.36 g/mol
number of moles = 0.7945 moles
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mass number of moles molar mass 150.45 g number of moles 189.36 g/mol number of moles = 0.7945 moles

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Step 3

Calculation for number of moles of Oxygen:

1mole of Zn(NO3...

1 mol Zn(NO3)2
6 mol oxygen
0.7945 mol Zn(NO3)2- x mol Oxygen
0.7945 mol Zn(NO3)2 x 6 mol Oxygen
X =
1 mol Oxygen
4.767 mol Oxygen
x
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1 mol Zn(NO3)2 6 mol oxygen 0.7945 mol Zn(NO3)2- x mol Oxygen 0.7945 mol Zn(NO3)2 x 6 mol Oxygen X = 1 mol Oxygen 4.767 mol Oxygen x

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