How do I balance the chemical equation Ca(s) +O2(g) =CaO(s)

Hey there!

Ca + O₂ → CaO

Balance O.

2 on the left, 1 on the right. Add a coefficient of 2 in front of CaO.

Ca + O₂ → 2CaO

Balance Ca.

1 on the left, 2 on the right. Add a coefficient of 2 in front of Ca.

2Ca + O₂ → 2CaO

Our final balanced equation: 2Ca + O₂ → 2CaO

Hope this helps!

2Ca(s) + O2(g) = 2CaO(s)

Explanation:

2 moles of calcium reacts with 1 mole of oxygen gas to yield 2 moles of calcium oxide.

Thus, the reaction shows the formation of calcium oxide when calcium metal burns in the presence of oxygen. This is also the laboratory preparation of calcium oxide from calcium and oxygen.

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explanation:

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :