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Some Basic Concepts of Chemistry

Short Answer Type

231.

Calculate the mass of nitrogen supplied to the soil by 5Kg of urea [CO(NH₂)₂]?

Multiple Choice Questions

232.

20 mL solution of 0.1 M ferrous sulphate was completely oxidised using a suitable oxidising agent. What is the number of electrons exchanged?

1.204 x 10²²
193
1930
1.204 x 10²¹

Short Answer Type

233.

Calculate the molar mass of the following:
H₂O

119 Views

234.

Calculate the molar mass of the following:
CO₂

114 Views

235.

Calculate the molar mass of the following:
CH₄

102 Views

236.

Calculate the molecular mass of glucose (C₆H₁₂O₆) molecule.

113 Views

237.

Calculate the gram molecular mass of sugar (C₁₂H₂₂O₁₁).

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238.
How much copper can be obtained from 100 g of copper sulphate (CuSO₄)?

1 mole of CuSO₄ contains 1 g atom of Cu.
Now molar mass of CuSO₄= 63.5 + 32 + 4 x 16 =159.5 g mol^-1Cu that can be obtained from 159.5 g of CuSO₄= 63.5 g
Cu that can be obtained from 100 g of CuSO₄

= = 39.81 g

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Long Answer Type

239.

Explain the term 'mole'?

152 Views

240.

What is the utility of mole concept?

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Previous Year Papers

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Short Answer Type

Multiple Choice Questions

Short Answer Type

238. How much copper can be obtained from 100 g of copper sulphate (CuSO4)?

Long Answer Type

238.
How much copper can be obtained from 100 g of copper sulphate (CuSO₄)?