Someone know how to do this: Explain how the chemical equation Mg+2gCI2+H2 shows the law of conservation of mass

1 a

2 d

3 a

4 c

explanation:

pie chart because it is in percents ( % )

i think the answer is terrae but not 100 percent sure. ▓▬▬ §

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

if you need further assistance, let me know: )

~ trueboss72