Question

How many moles of oxygen are contained in 50g of magnesium trioxocarbonate(IV)

Answer 1

Answer:

trioxocarbonate (iv), commonly known having the chemical formula MgCO3 M g C O 3 , with hydrochloric acid, {eq}\rm...

Answer 2

The chemical formula for magnesium trioxocarbonate(IV) is MgCO₃.

The number of moles of oxygen present in one mole of magnesium trioxocarbonate(IV) is three.

The molar mass(M) of MgCO₃ = ( 24×1) + (12×1) + (16×3) =84g.

• Number of moles = $\frac{Given mass}{Molar Mass}$

Given mass = 50g

Number of moles = $\frac{50}{84}$

=0.6moles

The number of moles of oxygen = 0.6 ×3= 1.8

1.8 moles of oxygen are present in  50g of magnesium trioxocarbonate(IV).