Let's say we started with 0.4015 g of a mixture of MgCl, and NaCl. We add anexcess of AgNO3(aq) and find that we have 1.032 g of the precipitate, AgCl(s). How many moles of MgCl, and NaCl did we have in our original mixture?
Express your answers with 4 significant digits.
mol MgCl2
mol NaCl

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

level 4 to level 2 : ))