Calculate the mass of sodium bromide dihydrate is required to prepare 250 mL of a 0.00600 M solution

The mass of sodium bromide dihydrate is 0.208 grams

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

where,

n = moles of solute

= volume of solution in ml  = 250 ml

moles of =

Now put all the given values in the formula of molality, we get

Therefore, the mass of sodium bromide dihydrate is 0.208 grams

the answer would be a

since electrons are negative the answer is neagtaive