(Solved): Here are the solubilities of some salts in water. The solubility graph above shows that the maximu ...

Here are the solubilities of some salts in water. The solubility graph above shows that the maximum amount of \( \mathrm{KCl} \) and \( \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \) that will dissolve in water at 70 degrees Celsius is approximately \( 500 \mathrm{~g} \). Use the graph to answer the following questions. A. What is the maximum amount of \( \mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2} \) that will dissolve at 30 degree? B. If \( 500 \mathrm{~g} \) of \( \mathrm{KCl} \) is is mixed with \( 1 \mathrm{~L} \) of water at 40 degrees, how much \( \mathrm{KCl} \) will remain undissolved. C. If \( 500 \mathrm{~g} \) of \( \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \) is is mixed with \( 1 \mathrm{~L} \) of water at 40 degrees, how much \( \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} \) will remain undissolved. D. If \( 500 \mathrm{~g} \) of \( \mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2} \) is is mixed with \( 1 \mathrm{~L} \) of water at 40 degrees, how much \( \mathrm{Pb}_{2}\left(\mathrm{NO}_{3}\right)_{2} \) will remain undissolved.