Question

In: Chemistry

Questions Part A: Based on the analysis of your local water, would you classify its hardness...

Questions

Part A:
Based on the analysis of your local water, would you classify its hardness as soft, moderate, hard, or very hard? Explain your answer.

Part B
Approximately how much calcium would you ingest by drinking eight 8-oz glasses of your local water? Hint: 1 oz (fluid ounce) = 29.57 mL.

Part C
Assume an average minimum daily requirement for calcium is 1,150 mg. Calculate what percentage of your daily requirements could be met by drinking 1.0 L of your local water.

Expert Solution

A.

Measurement (ppm) nature of water

17.1 soft

17-60 slightly hard

60-120 moderately hard

120-180 hard

over 180 very hard

B. If the local water hardness = x ppm (x mg / L)

Then 8oz glasses = 29.57 X 8 mL = 236.56mL

so in 1L of water we have x mg of calcium

so in 1mL = x/1000 mg

so in 236.56 mL amount of calcium = x X 236.56 / 1000 mg ( so you can put the value of x in this)

C. If we need 1150 mg of calcium

The amount of calcium in 1L of water = x mg

% of requirement fullfilled = 1150 X x / 100 %

queen_honey_blossom answered 3 months ago

As part of a water quality survey, you test the water hardness in several randomly selected...

As part of a water quality survey, you test the water hardness in several randomly selected streams. The results are shown below. Construct a confidence interval for the population variance sigma squared and the population standard deviation sigma. Use a 99 % level of confidence. Assume that the population has a normal distribution. nequals24 sequals16 grains per gallon

Describe hardness in water and its effect on water quality with you own words. (2 pages)

How would you measure the hardness of: a) unmovable part of a large machine which is...

How would you measure the hardness of: a) unmovable part of a large machine which is very heavy to transport? b) an unknown alloy?

Question: Based upon your financial ratio analysis, what questions would you like to propose to management...

Question: Based upon your financial ratio analysis, what questions would you like to propose to management to gain clarity on the business operations? Industry Financial Ratio Standards: Ratio Industry Norm Milan Fashions Ratios 2015 Evaluation* Current ratio 4.5 times 13.25 Good Long-term debt-to-Equity ratio 12% 5.36% Good Debt-to-Equity ratio 30% 10.08% Good Total Debt ratio 20% 9.16% Good Financial leverage ratio 1.10 1.1 Fair Inventory turnover 7 times 6 times Poor Fixed asset turnover 1.8 times 2.99 times Good Debt-to-Capital...

How do you classify water distribution based on road orientation and geography of the area?

You are on your first audit of a local government and part of your job is...

You are on your first audit of a local government and part of your job is to evaluate financial ratios. The partner on the job told you that analysis of financial ratios alone is not sufficient for assessing the economic condition of the government entity. Identify at least five other factors that you think should be considered in assessing the entity’s economic condition and why they are important.

Based on the analysis of the four proposals below, which one would you recommend? Explain your...

Based on the analysis of the four proposals below, which one would you recommend? Explain your reason and include the meaning of the capital analysis methods. Think of how you might communicate your analysis to others that don’t know what these methods are about. (12 points) Proposal Cash Payback Period Average Rate of Return Net Present Value Present Value Index A 4 5% $ (71,260) 0.8416 B 2.33 18% 26,200 1.1310 C 3.5 15% 1,350 1.0042 D 3...

If you were Linnaeus today, with your knowledge on Microbiology today, how would you classify the...

If you were Linnaeus today, with your knowledge on Microbiology today, how would you classify the taxonomy of microorganisms? Give examples. Compare and contrast prokaryotic and eukaryotic chromosome structure . A new study led by researchers from Harvard school of Public health (HSPH) and Wellcome Trust Sanger institute in the UK has, for the first time used, genome sequencing technology to track changes in bacterial population following the introduction of a vaccine.

As part of your summer job at the local community center, your supervisor asks you to...

As part of your summer job at the local community center, your supervisor asks you to lead a community discussion on the uses of embryonic stem cells. Your goal is to cut through the rhetoric and provide information to the diverse group of community members that will attend. Write your notes for this event. (2pt each) Include: 1) a definition of a stem cell including its to two main characteristics, 2) a brief description of the origin of human embryonic...

classify the following solution as acids, bases or neutral based on their pH values water soda...

classify the following solution as acids, bases or neutral based on their pH values water soda pop vomit battery acid milk hand soap coffee blood orange juice drain cleaner Part B classify each substance as strong acid, strong base, weak acid, or weak base H2SO4 HBr HI H2SO3 (CH3)2NH CH3COOH HCLO4 H3PO4 NAOH LiOH can(OH)2 KOH C6H5COOH NH3