Explain the molar absorptivity for the compound

Assignment Help Chemistry
Reference no: EM13242720

You dissolve a compound with a molecular mass of 284.63 in a 10-mL volumetric flask. You remove a 1.00-mL aliquot, place it in a 25-mL volumetric flask and dilute it to the mark. The absorbance of this diluted solution at 345 nm was 0.451 in a 1.000-cm cuvet. The molar absorptivity for this compound at 345 nm is ?345 = 6185 M-1 cm-1.

(a) What is the concentration of the compound in the cuvet?

(b) What is the concentration of the compound in the 10-mL flask?

(c) How many milligrams of compound were used to make the 10-mL solution?

Reference no: EM13242720

Questions Cloud

What is it, according to obi : When responding to the welcome speech upon his return from England, Obi explains the value of education. What is it, according to Obi?
Evaluate the nuclear binding energy per mole of nuclei : Calculate the nuclear binding energy per mole of nuclei of and the binding energy per mole of nucleons for 31P. The required masses (g/mol) are: 1 1H = 1.00783; 1 0n = 1.00867; 31 15P = 30.97376
Few of beliefs and practices that developed in late hinduism : Describe the signification of few of the beliefs and practices that developed in late Hinduism. Conclude your answer with a brief overview of issues that face Hinduism in modern era.
What is the length of the open-closed pipe : The lowest pedal note on a large pipe organ has a fundamental frequency of 16 Hz, What is the length of the open-closed pipe that makes that note
Explain the molar absorptivity for the compound : You dissolve a compound with a molecular mass of 284.63 in a 10-mL volumetric flask. You remove a 1.00-mL aliquot, place it in a 25-mL volumetric flask and dilute it to the mark. The absorbance of this diluted solution at 345 nm was 0.451 in a 1.0..
Discuss the historical origins and development of jainism : Discuss the Historical origins and Development of Jainism. How does it relate to Hinduism?
How much work is done by the friction : You are testing a new amusement park roller coaster with an empty car with mass 123 kg. One part of the track is a vertical loop with radius 11.1 m, how much work is done by the friction
Define what is the concentration of iron in the well water : The diluted reference is placed in a cell with a 1.00-cm light path. You then take 35.0 mL of the well water, treat with HNO3 and excess KSCN, and dilute to 100.0 mL. This diluted sample is placed in a variable pathlength cell. The absorbance of t..
Discuss the impact of aryans and brahmins on early hinduism : Discuss the impact of the Aryans and Brahmins on Early Hinduism.

Reviews

Write a Review

Chemistry Questions & Answers

  Define compression and cooling of nitrogen gas

Compression and Cooling of Nitrogen Gas. A volume of 65.0 ft^3 of N2 gas at 90°F and 29.0 psig is compressed to 75 psig and cooled to 65°F.

  State the cytochrome b complexes of the mitochondrion

The cytochrome b complexes of the mitochondrion and the chloroplast have similar organization and function. They each pass electrons from a reduced quinone to a peripheral membrane protein

  Calculate the molecular formula of the hydrate

A hydrate of calcium chloride contains 49.3% water and has a formula weight of 219 g/mol. Calculate the molecular formula of the hydrate.

  Define the empirical formula of the active ingredient

sample of this compound is combusted in excess oxygen and the products are 2.492 g of CO2 and 0.6495 g of H20. Determine the empirical formula of the active ingredient.

  Define the mass of solid sodium fluoride

What mass of solid sodium fluoride (molar mass = 41.99 g/mol) should be added to 1.0 L of 0.23M hydrofluoric acid to make a buffer with a pH of 2.94? (Ka of HF = 1.36 x 10-3)

  Determine the vapor pressure of pure water

The vapor pressure of water above this solution is found to be 0.3630 atm at 348.0 K . The vapor pressure of pure water at this temperature is 0.3804 atm.

  What is the total pressure in the bulb

A metal bulb is filled with 10.2 g of CHCl3 and 0.322 g of CH4 (two gases). What is the total pressure in the bulb if the temperature is 345 C and the volume is 50.0 mL.

  What is the actual yield in grams of oxygen

In the decomposition of hydrogen peroxide, the percentage yield of oxygen is 93%. What is the actual yield in grams of oxygen if you start with 100 grams of H2O2.

  State the volume of the aluminum cylinder

it was necessary to measure the volume of the sample. The diameter of the cylinder was 23.0 mm and the length of the cylinder was 38.9 mm. What was the volume of the aluminum cylinder in cm3?

  Aqueous hydrobromic acid react with solid sodium hydroxide

Aqueous hydrobromic acid will react with solid sodium hydroxide to produce aqueous sodium bromide and liquid water . Suppose 36.4 g of hydrobromic acid is mixed with 5.9 g of sodium hydroxide.

  The henderson and hasselbalch equation to compute the ph

Use the Henderson and Hasselbalch equation to calculate the pH of a buffer solution that is 0.45 M in NH4Cl and 0.15 M in NH3

  Calculate the molar concentration of cl

A 493 mL sample of solution contains 33.2 g of CaCl2 Calculate the molar concentration of Cl in 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