Coal falls under Graphite
The half-life of carbon-14 is about 5730 years
1m = 100cm
so 10m = 100*10 = 1000cm or in scientific notation 1.00x10^3 cm
1g = 1/1000kg
1mL = 1/1000L
so 1g/mL = (1/1000)/(1/1000)kg/L
=1kg/L
37.5g/mL = 37.5kg/L or 3.75*10^1 kg/L
Explanation:
fractional distillation method is used to obtain petrol from petroleum...
hope it helps
They use it because it's standerize and evidence vase
