The following reaction shows calcium chloride reacting with silver nitrate. CaCl2 + 2AgNO3 → 2AgCl + Ca(NO3)2
How many grams of Ca(NO3)2 are produced from 2,000.0 grams of AgNO3?
(Molar mass of Ca = 40.1 g/mol, Cl = 35.5 g/mol, O = 16.0 g/mol, Ag = 107.9 g/mol, N = 14.0 g/mol)
(Show your calculations for full credit. Correct answers will only receive partial credit.)

Grams of Ca(NO₃)₂ produced : 0.985 g

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

CaCl₂ + 2AgNO₃ → 2AgCl + Ca(NO₃)₂

MW AgNO₃ : 107.9+14+3.16=169.9

mol AgNO₃ :

mol ratio Ca(NO₃)₂ : AgNO₃ = 1 : 2, so mol Ca(NO₃)₂ :

MW Ca(NO₃)₂ : 40.1+2.14+6.16=164.1 g/mol

mass Ca(NO₃)₂ :

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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