To prepare 66 gm `CO_2` how much quantity of `CaCO_3` will be required? [Ca = 40, C = 12, O = 16]

How much quantity of HCl required to nutralize 40 gm NaOH ?[H=1,O = 16,Na = 23,Cl = 35.5]

How much quantity of CO_2 will be evoluted when 500 gm limestone is heated?

If a particular HCl solution contains 22% of the acid by weight, then how much quantity of this acid solution will be required to produce 1L CO_(2) gas at 27^(@)C & 760 mm pressure from pure CaCO_(3) ?

How much quantity of KClO_3 required to produce 5.6 lit oxygen at S.T.P.? [K = 39, Cl = 35.5, O = 16]

How many gram of CaCO_3 will react with exces of dilute HCl to produce 66 gm of CO_2 ? (Ca = 40, C = 12, O = 16)

Quantity of charge required to get 1 mole Al from Al_2O_3

Howmany gram of CO_2 would be required to be passed through a tank of lime water to proudce 100 grams of CaCO_3 ? (Ca= 40,C = 12,0= 16).

Quantity of charge required to release one moe Al from Al_2O_3 .

12.25 gm KClO_3 is heated to produe oxygen. How much quantity of Zn is required to produce hydrogen to react with the produced oxygen? (Zn = 65, K = 39, O = 16, Cl = 35.5, H = 1)

To rise temperature of 30 gm water from 20^@C to 50^@C how much heat is required?