Answer:
1. B
2. C
Explanation: The law that the properties of the elements are periodic functions of their atomic numbers. And the second one is, most of the air we breathe is made of oxygen.
Answer:
get rid of waste material
Al2(SO4)3 + 3CaCl2 > 2AlCl3 + 3CaSO4
I believe the answer is D.
Ang answer at Assume the following: mass defect =5.0531 x 10 - 29 kilograms. Use E =mc2, with c =3 x 108 m/s. At isa pa ang sa got mag aral ng mabuti kyo ah
