The reaction is combination of hydrogen molecules and oxygen molecules and form water. So the oxygen and hydrogen required together is equal to the mass of the water formed.
Answer:
Carbon Dioxide fire extinguishers extinguish fire by taking away the oxygen element of the fire triangle and also be removing the heat with a very cold discharge. Carbon dioxide can be used on Class B & C fires. They are usually ineffective on Class A fires
a) Carbon and oxygen are chemically bonded in carbon dioxide.
The elements lose their individual identities in CO₂, and they always combine o the proportion C:O = 1:2.
You cannot separate the elements from each other by physical means.
<span>A. They are inexpensive to use. Most of the chemical indicators are not expensive and can be used conveniently. Litmus paper is and example for chemical indicator. it is very cheap and anyone can procure it. The paper can be used to check acidic and basic nature of solvents.</span>