Gas Stoichiometry problem #3 the oxyuen to form magnesium oxide How many naneogr

Question

Gas Stoichiometry problem #3

the oxyuen to form magnesium oxide How many naneograms of Mg are required to remove of 24.5°C? volatillores the 3. In the process for refining reacting it with carbon monoxide metallurgical nickel, xture. Furber work- is a that can be remove from the reaction original sample. The product, gas the impurities present in the in up the of nickel metal, but without any of of collected recovery gNi, the pressure excess If a sample of impure nickel contains 77.4 monoxide is present decomposition storage tank at a temperature of 43oc, Assume that carbon of 4. The air bags in automobiles are inflated by mitrogen gas generated by the rapid sodium azide, NaN3, in the presence of excess iron oxide, Feno3 e 1.15 atm and at A typical air bag designed to contain 37 L mitrogen of Nil metho is azide of completely re all the One How many grams of sodium are needed to in submarines. lymying

Explanation / Answer

Ans 3.

Molar mass of Nickel = 58.7 g/ mol

77.4 g = 1.32 moles of Ni

each mole of compound contains single mole of nickel

so 77.4 g of nickel will form 1.32 moles of gas

Using the ideal gas law

pV = nRT

where p is pressure , V is volume = 4.00 L , n is number of moles of gas = 1.32 , R is universal gas constant = 8.314 J/mol.K and T is temperature in Kelvin = 316 K

putting all the terms in the equation above ,

p x 4.00 = 1.32 x 8.314 x 316

p = 867 atm

So the pressure of the gas will be 867 atm

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