Measurements of strontium in enamel from extracted wisdom

Assignment Help Chemistry
Reference no: EM13164162

Measurements of strontium in enamel from extracted wisdom teeth were done by atomic absorption spectroscopy. Solutions were prepared with a constant total volume of 10.0 mL containing 0.750 mg dissolved tooth enamel plus variable concentrations of added Sr. Added Sr Signal (ng/mL = ppb) (arbitrary units) 0 28.0 2.50 34.3 5.00 42.8 7.50 51.5 10.00 58.6 1) Find concentration of Sr in tooth enamel in parts per million (micrograms Sr per gram tooth) 2) Find 95% confidence interval for Sr in tooth enamel

Reference no: EM13164162

Questions Cloud

Explain amoxicillin is an important antibiotic : Amoxicillin is an important antibiotic. It can be obtained by an enzyme catalyzed reaction in aqueous solution. To ensure product stability and enzyme activity, you need to run the reaction in a buffer system at a pH of 7.30. a) Using the list pro..
What is the most appropriate temperature for storing protein : What is the most appropriate temperature for storing your protein between purification steps? a) Room temperature b) 4° C c) -20° C d) -80° C
Aaron burr hated alexander hamilton : Aaron Burr hated Alexander Hamilton because Hamilton:
What might have happened if the temperature : What might have happened if the temperature of the oven were set to 210 degrees
Measurements of strontium in enamel from extracted wisdom : Measurements of strontium in enamel from extracted wisdom teeth were done by atomic absorption spectroscopy. Solutions were prepared with a constant total volume
Plot with three different shading scheme (one plot per each : create two vectors X and Y of values from (-pi) to pr with a spacing of pi/10. Define the vector Z as: Z=(sin(sqrt(x^2+y^2)))/sqrt(x^2+y^2)
What is the total combined mass of carbon dioxide and water : An automobile gasoline tank holds 21kg of gasoline,when the gasoline burns, 84kg of oxygen is consumed, and carbon dioxide and water is produced. What is the total combined mass of carbon dioxide and water?
Computing the ph of the final solution at equivalance : calculating the pH of the final solution at equivalance point. Please show a step-by-step process
What is the approximate pressure of the gas inside the lungs : The sudden opening of the epiglottis and vocal cords releases this air explosively. Just prior to this release, what is the approximate pressure of the gas inside the lungs?

Reviews

Write a Review

Chemistry Questions & Answers

  Determine the amount of heat required to convert

determine the amount of heat required to convert 2.3 mol of ice at -13.1 degrees celcius to liquid water at 21.6 degrees celcius.

  What is the ph of a solution formed

what is the ph of a solution formed when 100 ml of a base with ph off 13 is diluted to 1 liter with pure water?

  The zinc content determined by dissolving the ore in hcl

The zinc content of a 1.23 g ore sample was determined by dissolving the ore in HCl, which reacts with the zinc, and then neutralizing excess HCl with NaOH. Zn+2HCl-->ZnCl2+H2

  Explain derivatives of butanoic acid

derivatives of butanoic acid, Indicate how a butanoic acid can be converted to an a) acid chloride; b) acid anhydride; c) an ethyl ester, and d) an N-methyl amide

  How many moles of strong acid could this buffer withstand

Consider 4 L of a buffer composed of 2 M HCN and 3 M NaCN? How many moles of strong acid could this buffer withstand?

  Determine the freezing point

Determine the freezing point and calculate the final temperature if initially this iron nail was at temperature of 28 degree Celsius?

  Determine impeller diameter

Step-wise solution to a numerical problem related to a flocculation-based water treatment plant having a flow of 25 MGD. The plant is to employ alum coagulation.

  Describe why magnetic metals are found

Explain why magnetic metals are found only among the 3d and 4f elements. Why are Sc and Ti, which are also 3d elements, diamagnetic?

  Determine the molar mass of freon-11 gas

Determine the molar mass of Freon-11 gas if a sample weighing 0.597 g occupies 100 cm3 at 95°C, and 1000 mmHg.

  What is the rate of reaction

The rate of disappearance of HBr in the gas phase reaction  2HBr (g) → H2 (g) + Br2 (g)

  What volume of water must be added

A 11.7 mL sample of a HCl solution has a pH of 2.000. What volume of water must be added to change the pH to 4.000?

  How many moles of hno3 are present

A nitric acid solution containing 71.0% HN)3 (by mass) has a density of 1.42 g/mL. How many moles of HNO3 are present in 1.00L of this 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