Question

10 g of hydrogen is burnt in the presence of excess oxygen. The mass of water formed is?​

Answer 1

Answer:

2H2 + O2 = 2H2O

10g of H2 is 5 moles.

Each mole of H2 produces a mole of H2O,

so, you will get 5 moles of water.

Just convert that to grams for the mass. HOPE IT HELPES YOU

Answer 2

Answer:

The balanced Chemical equation is :

2H2  + O2 ----->2H20

Molar mass of H2=2g

Molar mass of O2=32g

Molar mass of H2O=36g

∴ 4g Of hydrogen reacts with 32g of oxygen to produce 36g of water.

4g of Hydrogen ----> 36g Of water.

10g Of Hydrogen ----> ?

=10x36/4

=90 grams

∴10g Of  H2  will produce 90 grams of water

HOPE...IT..HELPS...

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