Explain redissolved in acid and titrated

Assignment Help Chemistry
Reference no: EM13227104

A 24-hour urine specimen was diluted to 2.000 L. After the solution was buffered to pH 10, a 10.00-mL aliquot was titrated with 27.32 mL of 0.003960 M EDTA. The calcium in a second 10.00-mL aliquot was isolated as CaC2O4(s) redissolved in acid, and titrated with 12.21 mL of the EDTA solution. Assuming that 15 to 300 mg of magnesium and 50 to 400 mg calcium per day are normal, did this specimen fall within these ranges?

Reference no: EM13227104

Questions Cloud

How much power is delivered to the end of the combined fiber : Ten multimode glass fibers (n1 = 1.48, n2 = 1.45) are spliced together. Each fiber is 2 km long and has a loss rate 2-dB/km. Each splice adds 1 dB of loss. If the output power of the source is 7 dBm and radiates uniformly in a 60 degree half cone
State out the lewis structures for h2co3 : Draw out the Lewis structures for H2CO3, HCO3-, and CO32-. Then determine the maximum number of equivalent resonance structures for each species. Note that carbon is the central atom in all three cases.
Design phase-lag compensator for velocity error constant : Design a phase-lag compensator G_c(s) such that the static velocity error constant K_v is 50 sec^-1 without appreciably changing the location of the original closed-loop poles, which are at: \(s = -2 \pm j\sqrt{6}\)
Explain the importance of effective leadership : Put forward a business case for organisations to adopt talent management as part of their strategic human resource management and explain the importance of effective leadership in an organisation towards managing talent.What skills/competencies do l..
Explain redissolved in acid and titrated : The calcium in a second 10.00-mL aliquot was isolated as CaC2O4(s) redissolved in acid, and titrated with 12.21 mL of the EDTA solution. Assuming that 15 to 300 mg of magnesium and 50 to 400 mg calcium per day are normal, did this specimen fall wi..
What are the driving forces and key success factors : Explain the meaning and significance of each of the following and their relationship to one another?
What three indicators tell them that : Identify at least three indicators of whether a company's present strategy is working well. Obviously your Baldrige Case Study company's strategy is working well. What three indicators tell them that?
Find a unity feedback control system with an unstable plant : Design a PD Controller G_c(s) = K_p + K_d*s using the root-locus method such that the closed-loop system has a damping ratio, zeta = 0.7 and a natural frequency, omega_n = 0.5 rad/sec.
What are the keys to sustaining a focused low-cost strategy : What are the keys to sustaining a focused low-cost strategy? How does a focused differentiation strategy differ from a broad differentiation strategy?

Reviews

Write a Review

Chemistry Questions & Answers

  How many grams of dry nh4cl need to be added

How many grams of dry NH4Cl need to be added to 2.50 L of a 0.100 M solution of ammonia, NH3, to prepare a buffer solution that has a pH of 9.00? kb for ammonia is 1.8*10^-5.

  What volume of naoh is needed to reach the end point

flask contains 10.0 mL of HCl and a few drops of phenolphthalein indicator. The buret contains 10.0 mL of 0.220 M NaOH. 1. what volume of NaOH is needed to reach the end point of the titration?

  What is the minimum rate that fresh air has to be supplied

what is the minimum rate that fresh air has to be supplied to the room so that the concentration of CO2 in the room doesn't exceed 0.500% by mole? Assume the room is well mixed, and the volume of the solid dry ice does not change. mol air/min

  How many grams of ammonia can be produced

At a temperature of 425 0C and a pressure of 735 mmHg, how many grams of {NH_3} can be produced when 4.40 L of {NO_2} react.

  Explain what length of a cylindrical piece of tungsten wire

What length of a cylindrical piece of tungsten wire having a radius of 3.71 mm has a mass of 61.3 g? The density of tungsten is 19.25 g/cm3.

  State what is the ph of the resulting buffer

NaOH is added to 625 mL of 0.250 M weak acid (Ka = 5.62 × 10-5). What is the pH of the resulting buffer?

  What volumes of the stock solution will you have to pipet

What volumes of the stock solution will you have to pipet into the flasks to prepare standards of 1.00, 2.00, 5.00 and 10 x 10 -3 M KMnO4 solutions?

  Compute the parts per thousand deviation in ml

calculate the parts per thousand deviation in ml. for the three titrations. b) Would an additional titration be advisable? give a reason?

  Explain what is the molecular formula for lactic acid

The taste of sour milk is lactic acid. What is the molecular formula for lactic acid if the percent composition is 40.00% of C, 6.71% of H, 53.29% of O and the approximate molar mass is 90 g/mol

  How may ml of 0.450 n sodium hydroxide would be required

A vinegar sample contained 5.20 % acetic acid. How may mL of 0.450 N sodium hydroxide would be required to titrate 25.00 mL of the vinegar sample

  Define hydrolysis

Aqueous solutions of each of the following salts {sodium acetate, sodium phosphate, sodium formate, and sodium carbonate} have a pH that is > 7. The reason for this is that the anion undergoes a so-called "hydrolysis reaction".

  Write the lewis structure for sef6

Write the lewis structure for SeF6. What is the general "ABX" structure, shape name, and molecular polarity?

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd