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alexgriva [62]
3 years ago
7

What is the formula weight of magnesium nitrate, mg(no3)2? express your answer to four significant figures and include the appro

priate units?
Chemistry
1 answer:
Marina CMI [18]3 years ago
6 0

The formula weight of a compound is simply equal to the total molar mass.

The molar mass of each elements are:

Mg = 24.305 g/mol

N = 14.0067 g/mol

O = 15.999 g/mol

 

So the total molar mass is:

formula weight = 24.305 + 2 (14.0067) + 6 (15.999)

<span>formula weight = 148.3 g/mol</span>

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To balance this equation, first we should consider balancing C because it only presents in one reactant and one product.  Assuming the coefficient of C6H6 is 1, there are 6 C's in the reactant, so it generates 6CO2.  Then consider balancing H for the same reason. If the coefficient of C6H6 is 1, there are 6 H's in the reactant, so it generates 3H2O.
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3 0
2 years ago
4.a) Draw two Lewis structures for HCP; one where C is central and one where P is central: b) Calculate formal charge for each a
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One Hydrogen atom (H) and one Oxygen atom (O) surround the central Carbon atom (C) in the HCP Lewis structure (O). Carbon (C) and Phosphorus (P) have a triple bond, and Carbon (C) and Hydrogen (H) have a single bond.

<h3>How can you choose the ideal format for a formal charge?</h3>

The Lewis structure with the negative formal charges on the most electronegative atoms is the one to choose from when faced with a choice between numerous Lewis structures with similar formal charge distributions.

<h3>How do you determine the preferred resonance structure?</h3>

The resonance forms with the fewest non-zero formal charge atoms are selected. Resonance develops atoms that have a negative formal charge or are the most electronegative are preferred.

To know more about Lewis structure visit:-

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#SPJ4

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