Question

Thermal decomposition of rail car load of limestone to lime and carbon dioxide requires 7.92 x 106 kJ of heat. Convert this energy to calories. Once you have the value, determine its log (base 10) and enter this in decimal format with three decimal places. Do not include units.

Answer 1

`9.276`

Step-by-step explanation:

As we know that one kilo joules is equal to
`239.006` gram calories

Given ,

Energy required by thermal decomposition of rail car load of limestone to lime and carbon dioxide is equal to

`7.92 * 10^6` Kilo joules

This kilo joules of energy is converted into calories and is equal to

`7.92 * 10^6 * 239.006\\= 1.892*10^9`

On taking the log of this value, we get -

log (
`1.892 * 10^9`)
`= 9.276`

Hence, the answer is
`9.276`