Chemistry

A)How many moles of O2 are required for the complete combustion of 2.2 g of C3H8 to form CO2 and H2O?

b)A 65.25 g sample of CuSO4•5H2O (M = 249.7) is dissolved in enough water to make 0.800 L of solution. What volume of this solution must be diluted with water to make 1.00 L of 0.100 M CuSO4?

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  1. A)
    C3H8 + 5O2 ==> 3CO2 + 4H2O
    mols C3H8 = 2.2 g/molar mass C3H8.
    Convert mols C3H8 to mols CO2.

    b)
    mols CuSO4.5H2O = g/molar mass
    M = mols/L soln.

    Then use the dilution formula of
    c1v1 = c2v2
    c = concn
    v = volume

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  2. 306mL

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