Question

During the 1980s, the average emission of carbon from burning fossil fuels on Earth was 5.438 petagrams (Pg) of carbon per year in the form of CO2. (a) How many kg of C were placed in the atmosphere each year

Answer 1

Answer:

$1.99393\times 10^{13}\ kg$

Explanation:

$1\ petagram=10^{15}\ g$

$\\\Rightarrow 5.438\ petagram=5.438\times 10^{15}\ g$

In kg

$5.438\times 10^{15}\ g=\dfrac{5.438\times 10^{15}}{10^3}\\ =5.438\times 10^{12}\ kg$

12 grams of carbon is present in 44 grams of Carbon dioxide

$\dfrac{44\times 5.438\times 10^{12}}{12}=1.99393\times 10^{13}\ kg$

The carbon mass is $1.99393\times 10^{13}\ kg$