Calculate : `93 xx 107`

Evaluate: 9.3 xx 18

103xx107

Find:93 xx 104

Evaluate the following products without multiplying directly : 103 xx 107

Find the value of 107 xx 107 - 93 xx 93 .

Rate constant of a first order reaction is 6.93 xx 10^(-3) mi n^(-1) . Calculate the half-life period.

Evaluate: ( i) 986xx137+986xx863 (ii) 983xx207-983xx107

Calculate half life of a 1st order reaction, where the rate constant of the reaction is 6.93xx10^-3 sec^-1 .