Advertisements
Advertisements
Question
What is the mass of nitrogen in 1000Kg of urea [CO(NH2)2] ?
[H = 1, C= 12, N= 14, O = 16]
Advertisements
Solution
Molecular mass of urea is =60
60kg of urea has = 28 Kg of nitrogen
1000Kg of urea will have = 28 x 1000/60 = 466.66 or 467 Kg.
APPEARS IN
RELATED QUESTIONS
Give balanced chemical equations for the following conversions A, B, and C:
Potassium nitrate on strong heating decomposes as under :
2KNO3 → 2KNO2 + O2
Calculate : Weight of oxygen formed when 5.05g of potassium nitrate decomposes completely.
(K = 39, 0 = 16, N = 14)
What weight of sulphuric acid will be required to dissolve 3g of magnesium carbonate?
[Mg = 24, C =12, 0 = 16 ]
MgCO3 + H2SO4 → MgSO4 + H2O+ CO2
Calculate the percentage of water in ferrous sulphate crystals.
[Fe = 56, S = 32, O =16, H = 1].
10g of NaCl solution is mixed with 17g of silver nitrate solution. Calculate the weight of silver chloride precipitated.
AgNO3 + NaCl → AgCI + NaNO3
If the relative molecular mass of A is 90, what is the molecular formula of A?
Concentrated nitric acid oxidizes phosphorous to phosphoric acid according to the following equation :
P + 5HNO3 → H3PO4 + H2O + 5NO2
What mass of phosphoric acid can be prepared from 6 .2 g of phosphorous?
Calculate the relative molecular mass of:
Ammonium chloroplatinate (NH4)2 PtCl6
Calculate the relative molecular mass of:
CH3COONa
The mass of 5.6 litres of a certain gas at S.T.P. is 12 g. What is the relative molecular mass or molar mass of the gas?
