Question

Calculate the mass of (i) 0.2 moles of CO2 (ii) 10 moles of H2O (iii) 5 moles of MgO

Answer 1

Answer:

(i) mass of 1mole of CO2 = 12+32=44u

mass of 0.2 moles of CO2= (0.2 ×44 )/1=8.8u

(ii) mass of 1 mole of H2O = 2+16=18u

mass of 10 moles of H2O=10×18=180u

(iii) mass of 1 mole of MgO= 24+16=40u

mass of 5 moles of MgO= 5×40=200u

Answer 2

Answer:

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Explanation:

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