Question

How many moles of CaO will be produced from 23.9 g of Ca?
2Ca(s) + O2(g) – 20:0(3)
mol​

Answer 1

0.6 moles of CaO will produced.

Step-by-step explanation:

Given data:

Mass of calcium = 23.9 g

Moles of CaO produced = ?

Solution:

Chemical equation:

2Ca + O₂ → 2CaO

Number of moles of calcium:

Number of moles = mass/ molar mass

Number of moles = 23.9 g / 40 g/mol

Number of moles = 0.6 mol

Now we will compare the moles of calcium and CaO.

Ca : CaO

2 : 2

0.6 : 0.6

0.6 moles of CaO will produced.