Which gas sample contains the smallest number of molecules?
1 answer:
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Answer: Glassware C
Explanation:
According to moalrity equation:
= Molarity of stock solution = 4.50 M
= volume of stock solution = ?
= molaity of diluted solution = 1.35 M
= volume of diluted solution = 250.0 ml
A volumetric flask is more accurate for making solutions than a beaker or erlenmeyer flask and hence to measure 75.0 ml of stock solution , we use 250 ml of volumetric flask.
Thus 75.0 ml of stock is pipetted out using pipette and put into a volumetric flask of 250 ml and water is added till the mark reaches 250 ml.
A volumetric flask is more accurate for making solutions than a beaker or erlenmeyer flask and hence to measure 75.0 ml of stock solution , we use 250 ml of volumetric flask.