Which of the following has a polar covalent bond? b. which of the following has a bond closest to the ionic end of the bond spectrum? ch3nh2 ch3ch3 ch3oh

a. CH₃OH.

b. CH₃F

Explanation:

Hello,

b. In this case, the polar covalent bond is in the O-H bond in the CH₃OH as the difference between the oxygen's and hydrogen's electronegativities is:

Which is eligible for a polar covalent bond.

b. However, since CH₃F is not in the list, it is the compound having a bond closest to the ionic end of the bond spectrum since fluorine is highly electronegative, therefore, it creates a dipole moment in the molecule which provide such feature.

Best regards.

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%