Equal volumes of h2 and o2 are placed in a balloon and then ignited. assuming that the reaction goes to completion, which gas will remain in excess 2 o 2h both are in equal proportion oxygen water hydrogen

Answer : The correct option is, Oxygen.

Explanation :

The given balanced chemical reaction is:

From the balanced reaction we conclude that, 2 moles of hydrogen react with 1 mole of oxygen to give 2 moles of water.

As we know that at STP, 1 mole of gas contains 22.4 L volume of gas. That means there is a direct relation between the moles and volume of gas.

So we ca say that,

2 unit volume of hydrogen gas will react with 1 unit volume of oxygen gas.

As per question, the volume of gasses are equal that means half of oxygen gas will be consumed against the complete volume of hydrogen gas.

Thus, the gas that will remain in excess is oxygen gas.

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).