Explain the molecular weight of the unknown compound

Assignment Help Chemistry
Reference no: EM13221652

When 1.150 grams of an unknown nonelectrolyte dissolves in 10.0 grams of water, the solution freezes at -2.16°C. What is the molecular weight of the unknown compound? Kf for water = 1.86°C/m.

88.6 g/mol

116 g/mol

74.2 g/mol

99.1 g/mol

132 g/mol

Reference no: EM13221652

Questions Cloud

Determine the real interest rate for years 1978 through 1982 : determine the real interest rate for the years 1978 through 1982 assuming that people expect the rate of inflation to be the average rate of inflation in the two previous years. Year: 1977 1978 1979 1980 1981 1982 Nominal interest rate: 5.6% 7.6% ..
Define the vapor pressure of pure propyl chloride : The vapor pressure of pure propyl chloride is 347 torr at 25°C and that of pure propyl bromide is 133 torr at 25°C. Assume that the solution is an ideal solution.
How many boxes of each size should the banks design : The bank believes it wil need at least 350 total boxes, at least 80 of which should be large. IT hopes to maximize revenue for safety deposit boxes. How many boxes of each size should the banks design provide?
Determine what is the expected return of the stock : Suppose that the change in price of stock is a random variable X that can assume only the four different values -20, 0, 10, and 30, and that P(X=-20)=0.1,P(X=0)=0.4,P(X=10)=0.3,and P(X=30)=0.2. What is the expected return of the stock
Explain the molecular weight of the unknown compound : When 1.150 grams of an unknown nonelectrolyte dissolves in 10.0 grams of water, the solution freezes at -2.16°C. What is the molecular weight of the unknown compound? Kf for water = 1.86°C/m.
What assumptions are made in this computation : How can we determine that probability that a project will be completed by a certain time? What assumptions are made in this computation?
How many lockers would you rent monthly at the price : You are the manager of a racquet club and you want to determine the best price for local rentals. Assume that the marginal cost of providing lockers is zero and the monthly demand for lockers is estimated to be best described as fitting the equati..
Explain the vapor pressure of the pure liquids : The vapor pressure of the pure liquids at 25°C are 451 torr for pentane and 321 torr for cyclopentane. Assume that the solution is an ideal solution.
What dangers are inherent in not evaluating training program : What dangers are inherent in NOT evaluating training programs?

Reviews

Write a Review

Chemistry Questions & Answers

  Compute the frequency of radio waves

One of those bands consists of radio waves with a wavelength near 20.m . Calculate the frequency of these radio waves. Be sure your answer has the correct number of significant digits.

  Define barium chloride and sodium sulfate

A balance is checked and found to be accurate and clean. After the lab, a spilled white solid is found on the balance. The only white substances available in the lab were barium chloride and sodium sulfate

  Explain the standard enthalpy of formation of gaseous h2o

The standard enthalpy of formation of gaseous H2O at 298 K is -241.82 kJ mol-1. Estimate its value at 75 °C given the following values of the molar heat capacities at constant pressure:

  Geologists can estimate the age of rocks by their uranium

Geologists can estimate the age of rocks by their uranium-238 content. The uranium is incorporated in the rock as it hardens and then decays with first-order kinetics and a half-life of 4.5 billion years

  Describe the reactant and products of the chemical reaction

Describe the reactant and products of the chemical reaction. Was the reactant (potato chip) completely consumed? What evidence supports your answer?

  Compute the moles of naoh needed for the reaction

needed to titrate 45.25 mL of NaOH. Calculate the moles of NaOH needed for the reaction. Calculate the Molarity of the NaOH solution

  Calculate the molarity of a solution

Calculate the molarity of a solution made by dissolving 0.150 mol Na2SO4 in enough water to form exactly 760 mL of solution.

  How many kcals are released

If 3.8kcal of energy is released when 1 gram of glucose is combusted, how many kcals are released when 0.689 moles of glucose are combusted

  State a silver strip was dipped into the test solution

A test solution contained 2 mL of 0.10 M Ag+. A silver strip was dipped into the test solution, and a cell potential of 0.0592 V was measured against an Ag/Ag+(1.0M) reference half-cell.

  State compounds a and b are isomers of molecular formula

Compounds A and B are isomers of molecular formula C9H19Br. Both yield the same alkene C as the exclusive product of elimination on being treated with tert-butoxide in DMSO Hydrogenation of alkene

  Compute the amount of n gas released

Calculate the amount of n2 gas released(in liters) when the diver returns to the surface of the water where the partial pressure of N2 is 0.80 atm

  Calculate the volume of sulfuric acid

calculate the volume of 19.4 M sulfuric acid that must be added to water to prepare

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