Compute the mass in milligrams of quinine

Assignment Help Chemistry
Reference no: EM13225756

Quinine in a 1.664 g antimalarial tablet was dissolved in sufficient 0.10 M HCI to give 500 mL of solution. A 20.00-mL aliquot was then diluted to 100.0 mL with the acid. The fluorescence intensity for the diluted sample at 347.5 nm provided a reading of 245 on an arbitrary scale. A standard l00-ppm quinine solution registered 125 when measured under conditions identical to those for the diluted sample. Calculate the mass in milligrams of quinine in the tablet.

Reference no: EM13225756

Questions Cloud

Describe the six sigma approach to quality : Describe the Six Sigma approach to quality, including the five steps in the process. How does Six Sigma approach to quality differ from the total quality management approach?
Explain what is the concentration of co2 ions at equilibrium : A 0.150-mole quantity of CoCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Co2 ions at equilibrium? Assume the formation constant of Co(NH3)62 is 5.0× 1031.
The fair labor standards act : The Fair Labor Standards Act (FLSA) was modified in 1994. Explain how the changes in the FLSA were enacted and discuss the opinions and concerns that different associations, special interest groups, and political groups had at the time.
How does supply chain management contribute : How does supply chain management contribute to the overall competitiveness of the corporation? What factors have raised the strategic importance of the supply chain management function?
Compute the mass in milligrams of quinine : A standard l00-ppm quinine solution registered 125 when measured under conditions identical to those for the diluted sample. Calculate the mass in milligrams of quinine in the tablet.
The official language movement-racial and ethnic groups : Investigate the official language movement, which is an important Hispanic American cultural interest, described on pp. 243–244 of the text by researching bilingualism in education and politics in the United States.
Explain how to design the power supply : You are working with a design team on a new product and are assigned to design the power supply. The requirements for the power supply are as follows: Input AC: 115 V AC +- 10%, 50-60 Hz Outputs: +5 V DC at 100 ma, +-12 V DC at 50 ma
An electrons in the neutral carbon atom are redistributed : The electrons in the neutral carbon atom are redistributed so that there are three lone electrons in the three 2p orbitals and one lone electron in the 2s orbital.
Identify some of the major risks : Identify some of the major risks that must be addressed by supply chain management and give examples of how those supply risks can be mitigated.

Reviews

Write a Review

Chemistry Questions & Answers

  Which compound will begin to precipitate first

solid NaI is slowly added to a solution that is 0.010 M in Cu+ and 0.010 M in Ag+. which compound will begin to precipitate first?

  Dissolved sucrose incrases its boiling point temperature

You have 100 moles of solvent (not water). You have determined that 100g of dissolved sucrose incrases its boiling point temperature by 10C. For 100 moles of the pure solvent, how much mass (in grams) of salt

  What is the most common chemical method for removing h30+

What is the most common chemical method for removing H30+ ions in aqueous solution? Net equation for the solution?

  State ph at the equivalence point of the titration

Rank the following titrations in order of increasing pH at the equivalence point of the titration (1 = lowest pH and 5 = highest pH).

  Explain the structure of 3-methylbutyric acid

Carboxylic acids have higher than expected boiling points due to dimeric associations involving hydrogen bonding. The structure of 3-methylbutyric acid is shown below. Draw a second molecule of 3-methylbutyric acid

  What will be its volume at the top of a mountain

A bag of potato chips contains 580 mL of air at 25°C and a pressure of 755 mm Hg. Assuming the bag does not break, what will be its volume at the top of a mountain

  Compute the equivalent number of moles of potassium

Calculate the equivalent number of moles of potassium permanganate? 3) calculate the clarity of the potassium permanganate solution?

  State the temperature of the calorimeter rose

The temperature of the calorimeter rose from 25C to 33.73C. If the heat capacity of the calorimeter was 9,630 J/C, what is the value of delta H for the combustion reaction in KJ/mol.

  Describe knudsen diffusivity

If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process'. The diffusivity under this condition is called 'Knudsen diffusivity'

  How many unpaired electrons in the f22+ ion

How many unpaired electrons in the F22+ ion are based on molecular orbital theory? The order of the molecular orbitals are (σ2s)(σ*2s)(σ2p)(π2p)(π*2p)(σ*2p).

  What are the states of matter for the products

KOH(aq)+ CoCl2(aq) --> KCl + Co(OH) what are the states of matter for the products?

  Explain moles of a gas are placed into a rigid

the pressure is measured as 8.75 atm. Which of these three gases below could be in the container and why? 1) Ar, 2)Co2, 3)HCl

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