A sample of MgCO3 is 50 % pure. If on heating 4.0 g of MgO and 4.4 gm of CO2 are formed. Calculate amount of MgCO3 taken. [ Mg = 24, C = 12, O = 16]
Asked by Veneet Suri | 5th May, 2013, 03:48: PM
Expert Answer:
MgCO3 = MgO + CO2
84g 40g 44g
4g 4.4g
100 g MgCO3 contains = 50 g MgCO3
84 g MgCO3 contains = 42 g MgCO3
Now
40g MgO produced by = 42 g MgCO3
4 g MgO produced by =4.2 g MgCO3
so ,the amount of MgCO3 taken is 4.2 gAnswered by | 6th May, 2013, 09:42: AM
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