According to the periodic table, which element has an atomic number of 40?
a. u
b. ca
c. zr
d. np

Does the temperature affect the solubility of sugar and salt in water? if it does tell me like different temperatures with different solubilities so i can sketch down a graph

Based on the equation and the information in the table, what is the enthalpy of the reaction?

In apex! a liquid heated beyond a certain temperature becomes