Question

A sample has 50mg/l ca2+,150mg/l mg2+ 50 mg/l na+ , 20 mg/l cl- and 100 mg/l glucose. Calculate its total hardness, carbonate and non-carbonate hardness?

Answer 1

Answer:

lution:

MPN of a certain water sample is 25/100 mL does not mean that the sample necessarily has 25 microorganisms. Rather is means that the probability that the number of microorganisms in the sample is 25 is the highest among probabilities corresponding to different possible numbers of microorganisms in the sample.