What is the maximum amount of water (in grams) that can be removed from 15ml of toluene by the addition?

Complete Question

Magnesium sulfate forms a hydrate with the formula . What is the maximum amount of water (in grams) that can be removed from 15 ml of toluene by the addition of 200 mg of anhydrous magnesium sulfate? The molar mass of is 120.4 g/mol; H20 = 18 g/mol.

The value  is   of  

Explanation:

From the question we are told that

   The volume of toluene is  

    The mass of  anhydrous magnesium sulfate is  

   The formula of the hydrate is  

    The molar mass of    is  

From the formula given we see that

  1 mole of   wil remove  7 moles of to for the given formula

Hence

  120.4 g (1 mole) will remove  7 moles (7 * 18 g = 126 g  ) of   to for the given formula

Therefore 1 g of    x g  of    

So

=>    

From our calculation we obtained that

  1 g of will remove    of    

Then  

    of will remove z g of    of    

So

=>

=> of    

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons

the answers are

c and c