Q:
# What Is the Formula Weight of Mg(NO3)2?

**The formula weight of Mg(NO3)2 is 210.34 grams.** Formula weight is the sum of all of the atomic weights of the atoms that appear in a chemical formula.

To find the formula weight of Mg(NO3)2, one adds the atomic weight of one Magnesium ion, 24.31 grams, to the mass of two NO3 ions, 124.04 grams. The mass of an NO3 ion is calculated by multiplying the formula weight of oxygen, 16 grams, by three, then adding the result to the formula weight of nitrogen, 14.01. An element's atomic weight is the weight of one mole of its atoms; a mole of atoms is 6.022 x 10^23 atoms, according to the Encyclopeadia Britannica. Therefore, adding the atomic weights of the atoms in a given chemical formula yields the weight of one mole of that chemical.

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Q:
## How Do You Determine the Molecular Weight of SR(NO3)2?

A: To find the molecular weight of strontium nitrate, written as Sr(NO3)2, the molar mass of strontium, nitrogen and oxygen first has to be found from the per... Full Answer >Filed Under: -
Q:
## What Is the Molar Mass of Fe2O3?

A: The molar mass of Fe2O3, which is the chemical formula for iron(III) oxide, is 159.68 grams per mole. The molar mass is determined by adding together the a... Full Answer >Filed Under: -
Q:
## What Is Co(NO2)2?

A: Co(NO2)2 is the chemical formula for cobalt nitrite. Nitrites are compounds derived from nitrous acid. In the case of cobalt nitrite, the negative NO2 ion ... Full Answer >Filed Under: -
Q:
## What Is the Charge of NO2?

A: NO2, the formula for the nitrite ion, carries a charge of minus 1. An ion with a negative charge, such as the nitrite ion, is known as an anion. An ion wit... Full Answer >Filed Under: