Does anyone know this?

1.24 moles

Explanation:

first find the molar mass of AgNO3, which I got 169.877

then, divide the number of moles used by the Molar mas

210/169.877 = 1.2361 = 1.24

Since, the molar ratios of AgNO3 and Ag are the same (2:2), the answer will be 1.24

h

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