Explanation:
a) Cr is <u>acid</u> K is <u>base</u>
b) Ca is <u>base</u> and the other left part is <u>acid</u>
c)Ca is <u>base</u> and F2 is <u>acid</u>
<u>d</u><u>)</u><u> </u>NH4 is <u>acid</u> and SO4 is <u>base</u>
Answer: Catalyst B
Explanation:
Allows reactions to proceed at much lower energy levels than without.
Oxygen carbon and hydrogen
1st one I think.........................
Species that have the same number of electrons or the same electronic structure.