What would be the resulting molarity of a solution made by dissolving 25.4 grams of koh in enough water to make a 985-milliliter solution? show all of the work needed to solve this problem.

Hey there !

Molar mass KOH = 56.1056 g/mol

1) Number of moles :

n = m / mm

n = 25.4 / 56.1056 

n =0.452 moles

Volume in liters :
 
985 mL / 1000 => 0.985 L

Therefore:

M = n / V

M = 0.452 / 0.985

=> 0.458 M

The answer is a) carbon-12

Fine out you self hx