If water is added to 175 ml of a .45 m koh until the volume is 250 ml , what will the molarity of the diluted solution be

0.32 M

Explanation:

See the picture for work. There is an equation for molarity and volumes that you can use and solve for the second molarity. Double check the significant figures. I used the ones in your question.

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particle   p is an electron and particle q is a neutron