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Sagot :
Answer:
1937.6g
Explanation:
According to the question, a sample of tungsten II sulphate (WSO4) contains 4.17 × 10^24 molecules. This means that the number of moles can be calculated by dividing the number of molecules by Avagadro's number (6.02 × 10^23).
Number of moles of WSO4 = 4.17 × 10^24 ÷ 6.02 × 10^23
n = 4.17/6.02 × 10^(24-23)
n = 0.692 × 10^1
n = 6.92moles
Where; W = 184g/mol, S = 32g/mol, O = 16g/mol
The molar mass of tungsten II sulphate (WSO4) is calculated as follows;
WSO4 = 184 + 32 + 16(4)
= 184 + 32 + 64
= 280g/mol
mole = mass ÷ molar mass
mass = molar mass (MM) × number of moles (n)
mass = 280 × 6.92
mass = 1937.6g
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