Which of the following statements, if true, would support the claim that the no3− ion, represented above, has three resonance structures? the no3− ion is not a polar species. a the oxygen-to-nitrogen-to-oxygen bond angles are 90°. b one of the bonds in no3− is longer than the other two. c one of the bonds in no3− is shorter than the other two.

The claim that, if true would support the claim that the NO3− ion has three resonance structures is that; "The NO3− ion is not a polar species."

The existence of resonance in a molecule implies that all the bond lengths and bond angles are equal. Looking at the resonance structures as shown in the image attached, we can see that the nitrate ion is a triatomic specie.

Triatomic molecules are symmetrical hence the N-O bond angles in the nitrate ion is 120°. Recall that symmetrical molecules are nonpolar. Hence if the resonance structures for nitrate ion are true then the nitrate ion will be nonpolar.

Learn more: link

One of the bonds in nitrate is shorter than the other two.

Explanation:

We would firstly need to draw the Lewis structure for nitrate anion. To do this, let's follow the standard steps:

Therefore, we may have 3 resonance structures, as this double bond might be formed with any of the 3 oxygen atoms.

By definition, double bonds are shorter than single ones, so one of the bonds is shorter than the other two.

a boiling water reactor does not boil the water. a pressurized water reactor boils the water faster. a pressurized water reactor is heated directly by the core. a pressurized water reactor does not use fission.

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%