Compute mole fraction of caffeine

Assignment Help Chemistry
Reference no: EM13108874

A chloroform solution of caffeine (C8H10N4O2) contains concentration of 0.0868 m . compute mole fraction of caffeine(C8H10N4O2), the molarity of the solution,  % w/w of caffeine(C8H10N4O2). If it is given that; The density of the solution = 1.523 g/mL. molar mass of caffeine (solute)= 194.2g/mol ;molar mass of chloroform, CHCl3, (solvent) = 119.4 g/mol

Reference no: EM13108874

Questions Cloud

Determine the mole fraction of sodium chloride : Determine the mole fraction of sodium chloride(NaCl) in the solution  if this  solution is formed  by mixing 17.0 grams of  sodium chloride NaCl in 85.0 grams of Water?
Inappropriate use of statistics : How have statistics been used inappropriately and what are some examples of when you have seen or heard statistics used inappropriately?
Program performed significantly better than freshman class : On basis of these data, can college conclude that students in new program performed significantly better than rest of freshman class? Use a one-tailed test with α = .05.
How would you compare/contrast a hypothesis : How would you compare/contrast a hypothesis and theory as pertaining to science? What examples can you provide to support your answer?
Compute mole fraction of caffeine : Compute mole fraction of caffeine(C 8 H 10 N 4 O 2 ), the molarity of the solution
Explaining whether the renovation should occur : clearly labels the pre and post renovation analysis using an Excel work sheet. Do a comparative analysis in a Word document not to exceed 200 words explaining whether the renovation should occur.
Estimate the break even point : A manager must decide how many machines of a certain type to purchase. Each machine can process 100 customers per day. One machine will result in a fixed cost of $2000 per day.
Alternative hypothesis for a null hypothesis : What is the alternative hypothesis for a null hypothesis stating that the average time a person keeps a cell phone is, at most, three years?
How many grams of mgso4 would you need : If you wanted to make a 0.5M solution of MgSO4, how many grams of MgSO4 would you need? Assume the volume of the solution is one liter. Show your work.

Reviews

Write a Review

Chemistry Questions & Answers

  What is the normal boiling point of mercury

Question enthalpy and entropy values are given and were asked to find boiling point of mercury

  Determine what is the observed rate

This given reaction: 2 O3(g) -→ 3 O2(g) has an empirically determined rate law (with a single unimolecular event). Determine what is the observed rate If k =4.0 × 105s-1, [O2] = 0.2M and [O3] = 0.5 M?

  Find out the molecular formula

find out the molecular formula and empirical of this compound and determined to contain 4.36 grams of  phosphorus and 5.64 grams of oxygen

  Show the nuclear reactions

Nuclear reactions is expressed in given reaction as  2/1H +2 /1H→3/2He + ? ; 233/92U+1/0n→133/51Sb+98/41Nb+?1/0n

  Evaluate the time taken by a reactant

Chemical Kinetics - Determine the time taken by a reactant to reach a particular concentration

  Does isotopic substitution affect the probability

What is the probability of populating the first excited vibrational state (n = 1) at 298 K? Does isotopic substitution affect the probability? Would the intensity of absorption peaks be affected by isotopic substitution?

  Determine the rate constant

Determine the rate constant also explain how many mg will remain after thirty nine days -  A radiation biologist studies the decomposition rate of a certain substance and obtains the given data as

  Compute the ph at the temperature

Compute the pH at the temperature of 25 0C of a solution prepared by mixing  50 mL of 1.60 M sodium hydroxide solution to 0.5 of .0850 M Furoic acid HC 5 H 3 O 3 .

  Determine hydroxyl and hydrogen ion concentration

Determine hydroxyl and hydrogen ion concentration in this solution. (if Ka for ammonium ion = 5.0 x 10^-10.)

  Write a balanced molecular equation

Write a balanced molecular equation for these ten combinations.

  What is the limiting reactant after adding

How many moles of S8 are needed to make 0.600 moles of SF4? S8 + 8 Cl2 = 8 SCl2 ; 3 SCl2 + 4 NaF = SF4 + S2Cl2 + 4 NaCl

  Describe the use of nuclear isotope

Explain the use of nuclear isotope in medical field and Write a paragraph expaining what nuclear isotope can be used for medical purpose

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