CHEMISTRY145

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CHEMISTRYHIGHER LEVELPAPER 2

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1.a) Automobile air bags inflate by a rapid decomposition reaction. One typical compound used is guanidinium nitrate, C(NH2)3NO3, which decomposes very rapidly to form nitrogen, water vapour and carbon. Deduce the equation for the decomposition of guanidinium nitrate. [1] . C(NH2)3NO3 (s) → 2N2 (g) + 3H2O (g) + C (s) b) Calculate the total number of moles of gas produced from the decomposition of 10.0 g of guanidinium nitrate. [1] moles of gas = « 5× 10.0 g 122.11gmo l −1=¿...

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CHEMISTRY145 • CHEMISTRY145