Which statement has exceptions?(1 point) Sexual reproduction involves parental care, while asexual reproduction does not.

Sexual reproduction requires two parents, whereas asexual reproduction requires only one parent.

Sexual reproduction produces genetic variation, but asexual reproduction does not.

Sexual reproduction is more complex, while asexual reproduction is a simpler process.

Sexual reproduction involves parental care, while asexual reproduction does not.

c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

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%