Question

 The percentage of nitrogen in urea is about

Solution

Correct option is

46 %

 

NH2CONH2        ≡   2N

        1 mol             2 g atoms

          60 g               28 g

SIMILAR QUESTIONS

Q1

In the reaction, 4 NH3 (g) + 5 O2 (g) → 4 NO (g) + H2O (l), when 1 mole of ammonia and 1 mole of O2 are made to react to completion 

Q2

50mL 10 N H2SO4, 25mL 12 N HCl and 40 mL 5 N HNO3 were mixed together and the volume of the mixture was made 1000mL by adding water. The normality of the resultant solution will be : 

Q3

The number of atoms in 4.25 g of NH3 is approximately

Q4

A 100mL solution of 0.1 N HCl was titrated with 0.2 N NaOH solution. The titration was discontinued after adding 30mL of NaOH solution. The remaining titration was completed by adding 0.25 N KOH solution. The volume of KOH required for completing the titration is 

Q5

One mole of calcium phosphide on reaction with excess of water gives

Q6

Number of g of oxygen in 32.2 g Na2SO4. 10H2O is

Q7

The percentage of Se in peroxidase anhydrous enzyme is 0.5% by weight (atomic weight = 78.4). Then minimum molecular weight of peroxidaseanhydrous enzyme is

Q8

How much of NaOH is required to neutralize 1500 cm3 of 0.1 N HCl? (Na = 23)

Q9

10 dm3 of N2 gas and 10 dm3 of gas X at the same temperature contain the same number of molecules. The gas X is

Q10

The volume of water to be added to 100 cm3 of 0.5 N H2SO4 to get decinormal concentration is