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Answer to Question #57222 in Chemistry for panos
Question #57222
A student analyzes a sample and finds out it contains 25% of NaCl. After that he realises the sample contained KCl instead of NaCl. What is the % concentration of KCl in the sample?
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Comments
Here number of moles is not considered. The ratio of the mass percents is the same as the ratio of molecular weights of two substances.
can you explain how the first equation came up? The number of moles in the sample is stable?
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