Advertisements
Advertisements
प्रश्न
If a crop of wheat removes 20 Kg of nitrogen per hectare of soil, what mass of the fertilizer calcium nitrate,Ca(NO3)2 would be required to replace nitrogen in 10 hectare field? (N = 14, O = 16, Ca = 40)
Advertisements
उत्तर
Molecular weight of Ca(NO3)2 = 164
164 parts by weight of calcium nitrate contains 28 parts by weight of nitrogen .
28 Kg of nitrogen will be replaced by = 164 Kg of Ca(N03)2
20 Kg of nitrogen will be replaced by = 164 x 20/28
= 117.14 kg
For, 1 hectare of field 20Kg of nitrogen will be replaced by = 117.14 Kg of Ca(NO3)2
For, 10 hectare of field 20Kg of nitrogen will be replaced by = 117.14 x 10 = 1171.4Kg
Hence, 1171.4 Kg of the fertilizer calcium nitrate,Ca(NO3)2 would be required to replace nitrogen in 10 hectare field .
APPEARS IN
संबंधित प्रश्न
Prove the Following :
2 X V.D. = Molecular mass.
Define the term:
Vapour density
Calculate the percentage of water in ferrous sulphate crystals.
[Fe = 56, S = 32, O =16, H = 1].
Water can split into hydrogen and oxygen under suitable conditions. The equations representing the change is: 2H2O(I) → 2H2 (g) + O2(g)
Ammonia burns in oxygen and the combustion in the presence of a catalyst may be represented as:
2NH3 (g) +21/2O2 (g) → 2NO (g) + 3H2O (I)
What mass of steam is produced when 1.5 g of nitrogen monoxide is formed?
Concentrated nitric acid oxidizes phosphorous to phosphoric acid according to the following equation :
P + 5HNO3 → H3PO4 + H2O + 5NO2
What mass of nitric acid will be consumed at the same time?
The equation for the burning of octane is:
\[\ce{2C6H18 + 25O2 -> 16CO2 + 18H2O}\]
If the relative molecular mass of carbon dioxide is 44, what is the mass of carbon dioxide produced by burning two moles of octane?
A gaseous hydrocarbon contains 82.76% of carbon. Given that its vapour density is 29, find its molecular formula.
[C = 12, H = 1]
Calculate the relative molecular mass of:
(NH4)2 Cr2O7
What do you understand by the statement that ‘vapour density of carbon dioxide is 22’?
The atomic mass of Chlorine is 35.5. What is its vapour density?
