Question

Calculate d no. of moles in
392 gm of H2SO4
44.8 litr of CO2 at NTP
9 gm of Al
7.9 gm of Ca
65 gm of CO2​

Answer 1

Explanation:

392 g of sulphuric acid <br> Molar mass of

<br> 98 g of sulphuric acid = 1 mol<br> 392 g of sulphuric acid = 1 mol

mol <br> (ii) 44.8 litres of sulphirc dioxide at N.T.P <br> 22.4 litres of sulphur dioxide at N.T.P = 1 mol <br> 44.8 litres of sulphur dioxide N.T.P <br> 22.4 litres of sulphur dioxide at N.T.P = 1 mol <br> 44.8 litres of sulphur dioxide at N.T.P =

mol <br> (iii)

moleculec of oxygen <br>

molecules of oxygen = 1 mol <br>

molecules of oxygen

mol <br> (iv) 8g of calcium <br> Gram atomic mass of Ca = 40 g <br> 40 g of calcium = 1 mol <br> 8.0 g of calcium = 1 mole

mol.

Answer 2

Answer:

1825

1825- 1826

William Sturgeon (British) invents the electromagnet, a coil of wires with an iron core to enhance the magnetic field.