PLEASE HELP. PLEASE ONLY SHOW ME A FEW FOR EACH OF THE CALCULATIONS AS I WANT TO
ID: 486486 • Letter: P
Question
PLEASE HELP. PLEASE ONLY SHOW ME A FEW FOR EACH OF THE CALCULATIONS AS I WANT TO DO THE REST MYSELF! THANK YOU!!
Compos luc Samples Sample A Sample B Parameter pH 6.8 6.5 Alkalinity (mg L 1 as CaCO3) 340 45 K (mg L 1) 1.4 32 Na (mg L 1) 2700 14 Mg2 (mg L 6.7 160 Ca2 (mg L 1) 140 4500 NO3 (mg L 1) 0.1 CI (mg L 31 9800 so42 (mg L 1) 44 16 PO4-P (mg L1) 0.28 0.12 1.000 Density (kg L 1.012 a) Express the composition of these two samples in i) molarity (2 marks) ii) molality (2 marks) iii) ppm (2 marks) iv) meq L 1 (2 marks) b) Convert Po4-P to Po43 and P in mg L (4 marks) c) Convert the given values of alkalinity into Hco3 concentrations in mg L 1. (2 marks) d) Calculate the concentration of TDs in mg L' for each of the above samples. (2 marks) e) is the charge imbalance (a.k.a. charge balance error) a measure of accuracy or precision? What is the difference between these two measures of error? (4 marks) f) Calculate the charge balance error for both samples. Is there any evidence either analysis may have analytical errors? (4 marks)Explanation / Answer
Dear Student,
The following concept is very much important to understand the relationship between density, the amount of individual ions and the volume of the solution.
1. a.Please calculate the summation of each ion which gives the total mass of solute: ms
calcualte the volume of water:1 litre can be assumed
molarity: mass/litre ( the ratio of the total mass of the solute to the total volume- can be taken as 1 litre.
b. For calcualting molality please convert 1 litre of water to mass of water by multiplying it with the density of water.
Summation of the amount of salts in or mass of all the soltes per kg of water would give the molality.
Others are to be calcualted in a similar manner.
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