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3 articles trouvés pour ce sujet.
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Percentage of Acid |
2009-07-17 |
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Leeanne pose la question :
here is my question:
a chemist has 200 liters of solution that is 5% acid. how many liters of water
(0% acid) must he add to make a solution that is 4% acid?
Stephen La Rocque lui répond. |
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Mixing solutions |
2002-09-13 |
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Margaret pose la question :
In a chemistry laboratory the concentration of one solution is 10% hydrocholoric acid (HCl) and that of a second soulution is 60% HCl. How many mL of each should be mixed to obtain 50 mL of a 30% HCl solution??
Penny Nom lui répond. |
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A chemist had 8 flasks |
2000-12-10 |
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Jimmy pose la question :
A chemist had 8 flasks capable of holding 12, 15, 27, 35, 37, 40, 53 and 69 fluid ounces respectively. He filled some with water and then filled all the rest except one with alcohol. He used exactly one and a half times as much alcohol as water. Which flask was left empty and which were left with water and which with alcohol?
Claude Tardif lui répond. |
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