Many metals react with oxygen gas to form the metal oxide. For example, calcium reacts as follows:
2Ca(s) + O₂(g) → 2CaO(s)
You wish to calculate the mass (g) of calcium oxide that can be prepared from 4.20 g of Ca and 2.80 g of O₂.
(a) What amount (mol) of CaO can be produced from the given mass of Ca?

Respuesta :

The given chemical reaction is

[tex]2Ca+O_{2} \to 2CaO[/tex]

Here we have to calculate how many moles of CaO can be produced from the given mass of Ca.

In the above balanced reaction 2 moles of CaO has formed  from 2 moles of Ca.

The given mass of Ca = 4.20 g

Mass of [tex]O_{2}[/tex] = 2.80 g

Moles of CaO can be calculated as follows,

Mass of a Ca [tex]\times[/tex][tex]\frac{2 moles of CaO}{2 moles of Ca}[/tex]= 4.20g of Ca [tex]\times[/tex] [tex]\frac{2 moles of CaO}{2 \times 40.08g of Ca}[/tex] = 0.105 mole of CaO

Thus 0.105 moles of CaO can be produced from the given mass of Ca.

What is Chemical Reaction?

A chemical reaction is a process that converts one or more compounds, known as reactants, to one or more distinct substances, known as products. Chemical elements or compounds are examples of substances.

To learn more about Chemical Reaction

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