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10 Nov 2019

1). How many liters of oxygen gas are needed to exactly reactwith 27.8 g of methane at 22.0 oC and 637.0 torr

CH4(g) + 2 O2(g) ? CO2(g) + 2H2O(l) (balanced)

3) A 0.5800 g sample of gas occupies 140. mL of volume at 22.4oC and 0.68 m Hg. What is the molar mass of the gas?

4) Ammonium nitrate (MM=80.052) decomposes explosively uponheating according to the following equation:

NH4NO3 (s)? N2 (g) +O2 (g) + H2O (g) (reactionnot balanced)
Calculate the total volume (in L) of gas (at 156.5 oCand 146.0 kPa) produced by the complete decomposition of 1.550 kgof ammonium nitrate

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20 Feb 2019
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a) A10.0 L sample of a gas at 25oC and 1.5 atm iscompressed at constant temperature to a volume of 1.0 L. What isthe new pressure?

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