To calculate the amount of calcium hydride needed to form 4.850 g of hydrogen gas, you need to use the molar ratio between calcium hydride (CaH2) and hydrogen gas (H2), which is 1:2. Therefore, you would need half as many grams of calcium hydride as the grams of hydrogen gas produced, so 2.425 g of calcium hydride would be needed.
oxygen is needed for fuel to burn
Oxygen is the gas in the atmosphere needed by all living things for the process of respiration. Oxygen is taken in by organisms to produce energy through the oxidation of their food.
To determine the amount of gas needed to react with 348.5 grams of oxygen, you need to know the balanced chemical equation of the reaction. Then, use the stoichiometry of the reaction to calculate the amount of gas required based on the molar ratio between the gas and oxygen in the reaction.
Oxygen is the gas in the atmosphere that is important for respiration. It is needed by cells to generate energy through the process of cellular respiration.
If you didn't pass gas when you needed to you would get a pain in your stomach.
CO2 is needed for it. That is to get carbon
The energy needed to change a substance from a liquid to a gas is called heat of vaporization.
Oxygen is needed to feed the flame.
Oxygen
OXYGEN
Heat
Oxygen.
Oxygen
Oxygen
carbon dioxide
For a solid to change into a gas, the conditions needed are high enough heat and low enough air pressure.