Which of the following correctly compares glass A and glass B? A black line splitting the image into two parts. On the left hand side is glass A that is almost full. On the right side is glass B that is half full.
Question 13 options:

Glass A has the same mass as glass B.

Glass A has a greater mass than glass B.

Glass A has the same amount of liquid as glass B.

The liquid in both glasses takes up the same space.

Glass A has a greater mass than Glass B

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well in order to answer this question you have to provide more information < 3

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%