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Dumas method equation: moles of CuO used or coefficients

This type of question, asked 2 times: 2021 Paper 20, 2021 Paper 23. All 2 questions below, oldest first.

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  1. Question 1

    2021 Paper 20

    56
    The number of moles of CuOCuO, that will be utilized in Dumas method for estimation nitrogen in a sample of 57.5 g57.5\text{ }g of N,NN,N-dimethylaminopentane is ×10−2\times10^{- 2}. (Nearest integer)

  2. Question 2

    2021 Paper 23

    60
    The transformation occurring in Dumas' method is given below: C2H7 N+(2x+y2)CuO→xCO2+y2H2O+z2 N2+(2x+y2)CuC_{2}H_{7}\text{ }N +\left( 2x +\frac{y}{2} \right)CuO \rightarrow xCO_{2}+\frac{y}{2}H_{2}O +\frac{z}{2}{\text{ }N}_{2}+\left( 2x +\frac{y}{2} \right)Cu The value of yy is . (Integer answer)