Consider the hydrate FeSO4 • 7H2O. What is the percent by mass of water in the hydrate? % What is the percent by mass of the anhydrous salt in the hydrate? %

part a

What is the molar mass of this hydrate? (278.06) g/mol

What is the molar mass of the anhydrous salt  FeSO4? (151.92) g/mol

What is the molar mass of water in the hydrate? (126.14)  g/mol

part b

What is the percent by mass of water in the hydrate? ⇒ 45.4%

What is the percent by mass of  the anhydrous salt in the hydrate? ⇒ 54.6%

Explanation:

did the question on edge

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.

the best answer is d because the strong cohesion is caused by the ability of water molecules to undergo hydrogen bonding.

a is incorrect because when water solidifies, it becomes   ice, which expands and occupies a bigger volume for the same mass of water in its liquid state.

b is incorrect because water has high surface tension. besides bonding to itself it hydrogen bonds to other molecules at the top decreasing possibility for breaking of attractive forces.

c is incorrect because the water molecule has oxygen which is highly electronegative and so pulls the electron pair towards itself creating a dipole moment, making the molecule polar.

e is incorrect because water has strong adhesion, ability to stick to other molecules such as glass because of this molecules having stronger hydrogen bonding than water.