How many grams of MnCl2 need to be added to 5 liters of water to make a 0.25 M solution?

I think it is 860 g MG Cl2

Explanation:

your welcome

the answer would be a

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!

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~ trueboss72