The calorie is defined as `1 cal= 4.86 `joule Why as `1 cal= 4J` to make the conversions easy?

1 calorie =………….. joule.

True or False: 1 J = 4.18 cal.

The activation energy of a reaction is 225 K cal mol^(-1) and the value of rate constant at 40^(@)C " is" 1.8 xx 10^(-5) s^(-1) . Calculate the frequency factor , A.

5g of a gas is contained in a rigid container and is heated from 15^@C to 25^@C . Specific heat capacity of the gas at constant volume is 0.172 cal g ^(-1)^@C^(-1) and the mechanical equivalent of heat is 4.2 J cal . Calculate the change in the internal energy of the gas.

From an equilibrium state A to another equilibrium state A to another equilibrium state B an amount of work equal to 30 J is done on the system .if the gas is taken from state A to B iva a process in which the net heat observe by system is 10 cal , how much is the net work done by the system in the later case. [ Take 1 cal = 4.2 J]

The activation energy of a reaction is 22.5 k Cal mol^(-1) and the value of rate constant at 40^(@)C is 1.8xx10^(-5)s^(-1) . Calculate the frequency factor, A.

The slope of line which belongs to family (1+ l) x + (1-l)y + 2(1-l) = 0 and makes shortest intercept on x^2 = 4y - 4

A calorie is a unit of heat or energy and it equals 4.2 J where 1J = 1 kg m^(2)s^(-2) . Suppose we employ a system of units in which unit of mass is alpha kg. unit of length is beta m, unit of time is gamma . What will be magnitude of calorie in terms of this new system?