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OpenStudy (anonymous):
a sample of hard water is found to contain 40mg of ca^2+ ions per litre amount of washing soda requried to soften 4l of the sample is?
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OpenStudy (anonymous):
@shivam_bhalla
OpenStudy (anonymous):
it is 4 litre @ .Sam.
OpenStudy (anonymous):
i m sure shivam will help u he is genius :)
OpenStudy (anonymous):
|dw:1337082025181:dw|
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