Question

In: Chemistry

If I want to make 12 g of XeO2 from the elements, how much Xe do...

If I want to make 12 g of XeO2 from the elements, how much Xe do I need, in grams

Solutions

Expert Solution

The balanced reaction is Xe + O2 XeO2

Molar mass of Xe = 131.3 g/mol

Molar mass of XeO2 = ( At.mass of Xe) + (2xAt.mass of O)

                              = ( 131.3) + ( 2x16)

                              = 163.3 g/mol

According to the balanced equation,

1 mole of XeO2 is formed from 1 mole of Xe

                            OR

163.3 g of XeO2 is formed from 131.3 g of Xe

12 g of XeO2 is formed from M g of Xe

M = ( 12x131.3) / 163.3

   = 9.65 g

Therefore the mass of Xe required is 9.65 g


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