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

  Calculate the nonstandard emf reactions

Calculate the nonstandard emf for each of the following reactions if the concentration of each of the ions in these reactions is 0.0004 molar and everything else is standard (use 298 K for the temperature, R = 8.314 J/mol-K, and F = 96,485 C/mol)

  Give the number of valence electrons of each element

Give the number of valence electrons of each element and draw the Lewis structure for each molecule.

  What is the vapor pressure of solution

a solution is prepared by dissolving 396 grams of sucrose in 624 grams of water. what is the vapor pressure of this solution at 30 degrees celsius.

  State compounds exhibits absorbances

A solution containing the two compounds exhibits absorbances (using a 1.00cm cell) of 0.726 and 0.544 at 267 and 312nm, respectively. What are the concentrations of A and B in mg/mL? Note: The aborptivity values are given in units of L/g.cm.

  Evaluate the work done when the gas expands

Calculate (a) the work done when the gas expands isothermally against a constant external pressure of 200 Torr until its volume has increased by 3.6 dm3, and (b) the work that would be done if the same expansion had occurred reversibly.

  How many grams of water can be cooled

How many grams of water can be cooled from 36 degrees celsius to 23 degrees celsius by the evaporation of 53g of water.

  Calculate the final pressure of the sample

At 9.°C and 1.40 atm pressure, a sample of helium gas occupies a volume of 5.10 L. The sample is compressed and heated to 60.°C. Calculate the final pressure of the sample, if the final volume is 3.64 L.

  Compute the ph of soultion prepared by a buffer

calculate the ph of soultion prepared by adding20.0ml of 0.100m hcl to 80.0ml of a buffer that is comprised pf 0.25 M NH2NH2

  What is the mass of iron in grams

A sample of molten iron occupies of a volume of 7.11 x 10-3 L. If the density of iron is 7.86 g/cm3, what is the mass of iron in grams in the sample?

  State tetrachlorobenze and o-toluic acid

isolate two of three compouds given 1,2,4,5- tetrachlorobenze, o-toluic acid and 1,4-dibromobenzene

  How many moles of so2 are formed

If 114 grams of CS2 are burned in an excess of O2 (an amount sufficient to burn completely all 114 g of CS2), how many moles of SO2 are formed?

  Explain why the salt of a weak acid

Explain why the salt of a weak acid, as well as the acid itself, must be present to form a bu?er solution.

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