Question

plzzzz solve plzzz..........

Answer 1

see the equation given in picture,.
clearly,
6 moles of water needed to produce 4 moles of phosphoric acid,.or we can say that .
to produce 4 moles of phosphoric acid we need 6moles of water..
.
to produce 1 moles of phosphoric acid we need 6/4 moles of water
.
.to produce 10moles of phosphoric acid we need (6/4)*10= 15 moles of water

...now we know that ,.
there are two grams of hydrogen in one mole of water.
..or we can say,.
1mole of water has 2grams of hydrogen.,
therefore 15 moles of hydrogen has 15*2=30 grams of hydrogen!!!!....
Hence 30grams of hydrogen are needed to produce 10moles of phosphoric acid......
ANS.30gm...
hope this helps you!!!!!..

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