Compute the molecular weight of the unknown substance

Assignment Help Chemistry

Reference no: EM13245485

Pure chloroform, CHCl3, has a boiling point of 61.23 °C. Its boiling point elevation constant, Kb, is 3.63 °C m-1. A solution was made by taking 11.25 g of an unknown nonelectrolyte and dissolving it in 115.5 g of chloroform. The measured boiling point of the solution was 65.46 °C. Calculate the molecular weight of the unknown substance.

Reference no: EM13245485

Questions Cloud

How large of sample is needed to ensure that the probability : The number of hours spent studying by students on a large campus in the week before final exams follows a normal distribution with a standard deviation of 8.4 hours.A random sample of these students is taken

Rejection of the null hypothesis : Develop hypotheses so that rejection of the null hypothesis will allow us to conclude that the most recent bullish sentiment is weaker than that of one month ago.

Determine which were years of inflation : Compute the inflation rate for each year 1989 - 2006 and determine which were years of inflation. In which years did deflation occur In which years did inflation In which years did deflation occur In which years did disinflation occur

Determine the momentum of the probe : A space probe is traveling in outer space with a momentum that has a magnitude of 7.80 107 kg Â· m/s. Determine the momentum of the probe after the retrorocket ceases to fire

Compute the molecular weight of the unknown substance : The measured boiling point of the solution was 65.46 °C. Calculate the molecular weight of the unknown substance.

Calculate a new consumer price index for the data : Calculate a new consumer price index for the data in the following exhibit. Assume that current-year prices of Twinkies, fuel oil, and cable TV are $0.95/package, $1.25/gallon, and $15.00/month, respectively.

What kind of inefficiencies likely occurred during the year : which is "In the late 18th century, the price of bread in New York City was controlled, set at a predetermined price.", and then show the shift in supply. assume that the predetermined price did not change and the demand for bread did not change.

Explain what is the orientation of the oxygen atoms : Draw a representation of the 3-D structure of the anion, including only the bonding-pair electrons, and any sulfur lone-pair electrons. What is the orientation of the oxygen atoms with respect to each other around the S-S bond?

Explain how the change in the required reserve ratio would : Explain how the change in the required reserve ratio would influence the business price levels and consequently the price levels in the economy. Determine the impact the interest rate would have in relation to the copy center's borrowing decision.

User Account

All Pages