Picture (1) represents an equilibrium mixture of solid CaCO3,solid CaO,and gaseous CO2,obtained as a result of the endothermic decomposition of CaCO3. 
-Which picture (2) -(4) represents the equilibrium mixture after addition of four more CO2 molecules?
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Simple Interest
Interest earned or paid on the original principal only of a deposit or loan, without compounding.
Loan Repaid
The act of paying back borrowed money to the lender.
Borrowed
The state of having taken something on loan, often with the obligation to return it or repay an equivalent amount.
Annual Rate
The interest rate for a whole year, as opposed to just a monthly or daily rate.
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