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CBSE Class 10 Answered

Mg+2HCl -----> MgCl2+H2
Asked by mvicky.com | 09 Jul, 2009, 05:44: PM
answered-by-expert Expert Answer

In the equation one mole of Mg reacts 2 moles of HCl to form 1 mole of H2 .

Therefore moles of Mg can be related to moles of H2 formed.

If one mole H2  is formed from one mole of Mg, then 4 moles of H2 can be formed from 4 moles of Mg.

1mole of Mg contain 6.023 X1023  atoms

Therfore 4 mole of Mg contains  4 X 6.023 X 1023 = 24.092 X 1023 atoms.

Answered by | 10 Jul, 2009, 09:41: AM

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