12g of Mg (at.mass 24) will react completely with acid to give
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Let the acid be HCL
Reaction;Mg+2HCL→MgCl2+H2
This shows that 1 mole of Mg(atomic mass=24g)will produce 1 mole of H2(Molar mass=2g)
24g of Mg will produce =1 mole of hydrogen
Thus 12g of Mg will produce=1 mole of hydrogen×12g÷24g=0.5moles of hydrogen
Reaction;Mg+2HCL→MgCl2+H2
This shows that 1 mole of Mg(atomic mass=24g)will produce 1 mole of H2(Molar mass=2g)
24g of Mg will produce =1 mole of hydrogen
Thus 12g of Mg will produce=1 mole of hydrogen×12g÷24g=0.5moles of hydrogen
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Answer:
answer is 0.5. mole of h2o
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