Chemical Forums
Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: dlow on May 04, 2023, 04:32:35 PM
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Hi guys. I need help calculating how to make up a solution. I’m hoping someone can help.
If I have solution A at 0.8ppm and solution B at 25000ppm. How do I make a 500ppm solution out of the two in 100ml.
Thanks in advance.
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Cross rule
25000 499.2
500
0.8 24500
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24999.2 equal 100 ml
Take 2 ml of 25000 ppm and 98 ml of 0.8 ppm.