Scientists learn about the universe by studying the light that comes to earth from stars and other objects in space. if you were a scientist hoping to understand the universe, what three questions would you ask?

there's really no specific answer but mine would be...

1. how does that light show from earth?

2. will that light ever dim?

3. are some stars bright but just not bright enough that we can see?

How many stars are in space?

How far away from Earth are certain stars?

Are there other planets like Earth?

Could a large meteor ever strike Earth?

Explanation:

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%

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)