What reaction type is
4+22⟶4+22

1. Why did uncle Potluck and Mattie Mae get called to Mrs. Diaz-Smith's room?  

2. Why does Mattie think that Quincy Sweet didn't want her to go in the car with her and her aunt?  

3.How did uncle Potlucks knee get so traitorous in his opinion ?

Explanation:

1. Why did uncle Potluck and Mattie Mae get called to Mrs. Diaz-Smith's room?  

2. Why does Mattie think that Quincy Sweet didn't want her to go in the car with her and her aunt?  

3.How did uncle Potlucks knee get so traitorous in his opinion ?

I NEED ANSWERS

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%

a polar bond is formed when electrons are shared unevenly between atoms