The second answer would be correct.
When fossil fuels combust, compounds such as NOₓ (Nitrogen Oxides) and SO₂ (Sulfur Dioxide). These compounds can then react with the environment to form the acids sulfuric acid and nitric acid, which, when reacted with water, release H₊ ions. The higher the concentration of H₊ ions, the more acidic the solution.
Explanation:
By Graham's Law,
We have r1/r2 = √(M2/M1), where M represents the molar mass of the gas and r is the effusion rate.
Since temperature is not a variable here, the sentence is true.
Answer:
All chemical reactions involve energy. Energy is used to break bonds in reactants, and energy is released when new bonds form in products. In some chemical reactions, called exothermic reactions, more energy is released when new bonds form in the products than is needed to break bonds in the reactants. The opposite is true of endothermic reactions. In an endothermic reaction, it takes more energy to break bonds in the reactants than is released when new bonds form in the products. This is all an ethemic reaction.
Hope this Helps!