. (a) Calculate the mass of nitrogen supplied to soil by 5 kg of urea


(a) Calculate the mass of nitrogen supplied to soil by 5 kg of urea [CO(NH2)2] [O = 16; N = 14; C = 12 ; H = 1 ]

(b) Calculate the volume occupied by 320 g of sulphur dioxide at S.T.P. [S = 32; O = 16]

 

Best Answer

(a) 60 g urea has mass of nitrogen(N2) = 28 g

So, 5000 g urea will have mass = 28 x 5000/60 = 2.33 kg

(b) 64 g has volume = 22.4 litre

So, 320 g will have volume = 22.4 x 320/64=112 litres

 

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