Answer:
Explanation:
ppm is a unit of concentration that expresses the mass of a component (solute) in 1,000,000 units of mass of a mixture (solution).
Thus, 395 ppm means 395 tons of CO₂ in 1,000,000 tons of air.
To determine the amount of CO₂ in 5.2 × 10¹⁵ tons of air, multiply the amount of air by the ppm concentration of CO₂ divided by 1,000,000 (10⁶):
[tex]5.2\times 10^{15}\text{tons of air}\times\dfrac{395\text{tons of }CO_2}{10^6\text{tons of air}}[/tex]
[tex]5.2\times 10^{15}\text{tons of air}\times\dfrac{395\text{tons of }CO_2}{10^6\text{tons of air}}=2.05\times 10^{11}\text{tons of }CO_2[/tex]
