State what is the molar mass of the unknown substance

Assignment Help Chemistry
Reference no: EM13184438

A soution containing 0.750 g of an unknown substance in 30.0 g of cyclohexane was found to freeze at 3.1 degree celcius . what is the molar mass of the unknown substance?

Reference no: EM13184438

Questions Cloud

How the u.s. price level decreased over a 12 month : 1. Why do you suppose that the U.S. price level decreased over a 12 month interval during the 2008-2009 recessions 2. On the basis of Figure 11-13, are jumps in the VIX index always associated with reductions in aggregate demand that indu..
Find out the molal freezing point : Describe an expreiment to determine the molal freezing point depression constant
Show the effect on financial statements : Evaluate the recommendation of the Vice president (Treating Ad as cost of production and overhead). The effect on financial statements and evaluate the recommendation of controller Morgan (Treating Ad as operating expense). The effect on financial ..
What are possible opportunity cost of opening artic landa : 1. Why do you suppose that firms in Artic nations are already developing specialized tanker ships and platforms for use in privately accessible Artic areas 2. What are possible opportunity cost of opening Artic lands to private extracti..
State what is the molar mass of the unknown substance : unknown substance in 30.0 g of cyclohexane was found to freeze at 3.1 degree celcius . what is the molar mass of the unknown substance?
State the solid mercury at its melting point : Calculate the heat energy released when 13.3 g of liquid mercury at 25.00 C is converted to solid mercury at its melting point. Constants for mercury at 1 atm
Why is such a difference in asias share of global real gdp : 1. Why is there such a difference in Asia's share of global real GDP, depending on whether the computation uses purchasing power parties or exchange rates 2. Why is Asia's "economic size" so much smaller on a per capita basis than on an a..
Are burial expenses deductible : Estimates can be entered in the entry screen for Line 63 of Form 1040. Refer to #6 above for Sheri's federal withholding.
Whats the potential danger of maintaining a rigid interest : Those who advocate that the Fed target monetary aggregates, usually argue that the Fed should not alter its monetary targets in response to temporary changes in macroeconomic conditions, yet those who advocate interest rate targeting never recomme..

Reviews

Write a Review

 

Chemistry Questions & Answers

  What mass of copper would be produced

What mass of copper would be produced by the reduction of copper(II) ions during passage of 1 ampere of current through a solution of copper(II) sulfate for 51 minutes?

  What will be its volume at stp

a sample of nitrogen occupies a volume 300 Ml at 30 degrees celcius and 700 mm Hg of pressure. what will be its volume at STP.

  How many kilograms of dietary fat are in a box

specific brand of gourmet chocolate candy contains 7.00 rm g of dietary fat in each 22.7-rm g piece. How many kilograms of dietary fat are in a box containing 4.00 lb of candy?

  What is the temperature rise when the sample is combusted

the molar heat of combustion of methanol, CH3OH, is -757kJ/mol. If 2g of methanol is placed in bomb calorimeter with heat capacity of 6.5 kJ/c, what is the temperature rise when the sample is combusted?

  Determine the mass of iron

Determine what is Δ[Br- ]/Δt If Δ[BrO 3 - ]/Δt = 0.018 M/s express your answer in M/s?

  Why same kind of enzyme have different thermal properties

A biochemist is trying to purify the enzyme hexokinase from a bacterium that normally grows in the Arctic Ocean at 5C. In the next lab

  Compute the grams of iron

Compute w when 181 grams of  iron (III) oxide (MM = 159.7 g/mol) combines with excess carbon(C)) to produce carbon dioxide(CO 2 ) gas at 359 K: express your answer in kilo joules

  Compute delta g rxn and e cell for a redox reaction

Calculate delta g rxn and e cell for a redox reaction with n=3 that has an equillibrium constant of K

  What is the ph of buffer after hydrochloric acid

What is the pH of this buffer after 0.45 mL of 10.0 M hydrochloric acid are added to it? The Ka for HF is 6.8 x 10-4.

  Calculate the heat of combustion of glucose

The heat capacity of a bomb calorimeter is found to be 5.68 kJ/oC. When a 1.652 g sample of glucose is burned in the calorimeter, the temperature of the calorimeter increases from 24.56 oC to 29.10 oC. Calculate the heat of combustion of glucose.

  State the linear plot of the half life

The relationship of [A]t / [A]o = 0.50^n, where n=number of half lives. n = I understand that the linear plot of 1/[C4H6] means second order.. but i do not understand how to calculate the half life from this information for part b.

  Calculate the molar mass of the biomolecule

A 1.70-g sample of a large biomolecule was dissolved in 11.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule.

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