How Does Adding Water Change the Molarity of a Solution?

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Adding water to a solution dilutes its molarity, which can be calculated using the formula Molarity = moles/liter. To find the new molarity after adding 227 mL of distilled water to a beaker containing a 0.5 M potassium nitrate solution, the initial volume of the solution must be known. The total volume after the addition of water will affect the concentration, as the number of moles of solute remains constant while the volume increases. Understanding how to calculate the new volume and apply the molarity formula is essential for solving this problem. Clarifying the initial volume of the potassium nitrate solution is crucial for determining the new molarity accurately.
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Homework Statement


A student accidentally spills 227 mL of distilled water into a beaker containing 0.5 M potassium nitrate solution
A) What is the new molarity?

Homework Equations


Molarity = moles/liter

The Attempt at a Solution


I'm just REALLY confused, and I would appreciate ANY hints to start me off. I, seriously, have NO IDEA what to do.

thank you so much :)
 
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How many moles of potassium nitrate do you have?
How does the molarity change when the volume changes after the water is added (i.e. what is the new volume)?
 
You need to know the prior volume of pot nitr. solution in the beaker.
 

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