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Standard XII
Chemistry
Depression in Freezing Point
Calculate the...
Question
Calculate the percent composition of elements present in magnesium carbonate. How many kilogram of co2 is obtained by heating 1kg 90% of pure magnesium carbonate
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Q.
How much MgO is obtained on heating 5 gm of
(
M
g
C
O
3
)
Magnesium carbonate?
Q.
18.4
g of a mixture of calcium carbonate and magnesium carbonate, on heating, gives
4.0
g of magnesium oxide. The volume of
C
O
2
produced at STP in this process is:
Q.
(i) Calculate the volume of air needed for the combustion of 1 kg of carbon?
(ii) Calculate the volume of carbon dioxide obtained at S.T.P by heating 8.4 g of sodium carbonate.
Na
2
CO
3
→
Na
2
O + CO
2
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