If 0.5 moles of CaO is mixed into 2 liters of solution, what is the molarity? Group of answer choices 0.25 moles / liter 4 moles / liter 0.5 moles / liter 2 moles / liter

The correct answer is 0.25 moles/liter

Explanation:

Molarity is a measure of concentration and is defined as the moles of solute in 1 liter of solution.

2 L solution0,5 moles of CaO

1 L solution x= (1 L solutionx0,5 moles of CaO)/2 L solution =

x=0, 25 moles of Cao ---> 0,25M

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since electrons are negative the answer is neagtaive