I think for A and B you got the correct answer but for C I got a difference answer.
Five hundred twenty million, three hundred and forty thousand. hope it helps!
The first one because some people might not believe that and others might believe that.
Limestone is easily weathered by acid rain. When rain mixes with gases such as sulfur dioxide and carbon dioxide in the atmosphere, acid rain is formed (sulfuric acid and carbonic acid respectively). When the rain precipitates and meets with limestone which is CaCO3, it is weathered a shown by the formulae; 2CaCO₃ (s) + H₂CO₃ → 2CaHCO3 (aq)
Geographical features formed as a result of weathering of limestone in rocks are caves, stalactites, and stalagmites.
When a liquid absorbs heat energy without increasing its temperature is because it is using the absorbed heat for the change of phase from liquid to vapor. This is call vaporization. Vaporization requires energy because the molecules have to overcome the interaction that keeps them close to their neighbors in the liquid.So, <span>the answer is the option B.) it vaporizes.</span>
