Which one of the following factors would not speed up a chemical reaction?
A. increasing the concentration of a reactant
B. adding a catalyst
C. raising the temperature
D. making the reactant particles larger

What is the chemical formula of the following compound

Determine the reaction and balance the following equations urgent due in the morning

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false