Some of the fertilizers are sodium nitrate NaNO 3 , ammonium sulphate (NH 4 ) 2 SO 4 and urea CO(NH 2 ) 2 . Which of these contains the highest percentage of nitrogen?

(i) Molar mass of NaNO 3 = 23 + 14 + 3(16) = 23 + 14 + 48 = 85 g Nitrogen in 85 g NaNO 3 = 14 g Percentage of Nitrogen in NaNO 3 = x 100 = 16.47% (ii) Molar mass of (NH 4 ) 2 SO 4 = 2[14 + 4(1)] + 32 + 4(16) = 36 + 32 + 64 = 132 g Nitrogen in 132 g of (NH 4 ) 2 SO 4 = 28 g Percentage of Nitrogen in (NH 4 ) 2 SO 4 = x 100 = 21.21% (iii) Molar mass of CO(NH 2 ) 2 = 12 + 16 + 2[14 + (2 x 1)] = 28 + 2(16) = 28 + 32 = 60 g Nitrogen in 60 g of CO(NH 2 ) 2 = 2 x 14 = 28 g Percentage of Nitrogen in CO(NH 2 ) 2 = x 100 = 46.66% So, the highest percentage of Nitrogen is in Urea.

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Chemistry

Some of the fertilizers are sodium nitrate NaNO₃, ammonium sulphate (NH₄)₂SO₄ and urea CO(NH₂)₂. Which of these contains the highest percentage of nitrogen?

Mole Concept

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Chemistry

Some of the fertilizers are sodium nitrate NaNO₃, ammonium sulphate (NH₄)₂SO₄ and urea CO(NH₂)₂. Which of these contains the highest percentage of nitrogen?

Mole Concept

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From the equation
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Calculate:
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(b) Volume of nitric oxide at S.T.P. that can be collected.

(a) Calculate the number of moles in 7 g of nitrogen.
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200 cm³ of CO₂ is collected at STP when a mixture of acetylene and oxygen is ignited. Calculate the volume of acetylene and oxygen at STP in the original mixture.
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Urea (CO(NH₂)₂) is an important nitrogenous fertilizer. Urea is sold in 50 kg sacks. What mass of nitrogen is in one sack of urea?

Chemistry

Some of the fertilizers are sodium nitrate NaNO3, ammonium sulphate (NH4)2SO4 and urea CO(NH2)2. Which of these contains the highest percentage of nitrogen?

Mole Concept

Related Questions

From the equation3Cu + 8HNO3 ⟶ 3Cu(NO3)2 + 4H2O + 2NO(At. mass Cu=64, H=1, N=14, O=16)Calculate:(a) Mass of copper needed to react with 63 g of HNO3(b) Volume of nitric oxide at S.T.P. that can be collected.

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200 cm3 of CO2 is collected at STP when a mixture of acetylene and oxygen is ignited. Calculate the volume of acetylene and oxygen at STP in the original mixture.2C2H2 (g) + 5O2 (g) ⟶ 4CO2 (g)+ 2H2O (g)

Urea (CO(NH2)2) is an important nitrogenous fertilizer. Urea is sold in 50 kg sacks. What mass of nitrogen is in one sack of urea?

Some of the fertilizers are sodium nitrate NaNO₃, ammonium sulphate (NH₄)₂SO₄ and urea CO(NH₂)₂. Which of these contains the highest percentage of nitrogen?

From the equation
3Cu + 8HNO₃ ⟶ 3Cu(NO₃)₂ + 4H₂O + 2NO
(At. mass Cu=64, H=1, N=14, O=16)
Calculate:
(a) Mass of copper needed to react with 63 g of HNO₃
(b) Volume of nitric oxide at S.T.P. that can be collected.

(a) Calculate the number of moles in 7 g of nitrogen.
(b) What is the volume at S.T.P. of 7.1 g of chlorine?
(c) What is the mass of 56 cm³ of carbon monoxide at S.T.P?

200 cm³ of CO₂ is collected at STP when a mixture of acetylene and oxygen is ignited. Calculate the volume of acetylene and oxygen at STP in the original mixture.
2C₂H₂ (g) + 5O₂ (g) ⟶ 4CO₂ (g)+ 2H₂O (g)

Urea (CO(NH₂)₂) is an important nitrogenous fertilizer. Urea is sold in 50 kg sacks. What mass of nitrogen is in one sack of urea?