### Explain what is the molar mass of the unknown substance

Assignment Help Chemistry
##### Reference no: EM13290524

A solution containing .2g of an unknown substance in 2.5 g of cyclohexane is found to freeze at 5.1 C what is the molar mass of the unknown substance?

Change in T= 1.45, Kf = 20

#### Questions Cloud

 Sketch circuit diagram and phasor diagram of an inductance : A coil has an inductance of 400 mH and aresistance, RL, of 10 Ω. The coil is connected in series with a 100 Ω resistor Racross a 240V - 50Hz supply voltage V. Sketch the circuit diagram and phasor diagram; take V as the reference phasor. What is the meaning of chronic pain management : What is the meaning of chronic pain management to Mrs. Morgan community in far north of western Australia and preferable to collect information from groups of people rather than from a series of individuals. Focus groups can be useful to obtain cert.. How to calculate the solubility product constant for pb : Calculate the solubility product constant for Pb(IO3)2 (4.3 x 10^-5 M), given that the molar concentration of saturated solution is as indicated in parenthesis. Why would it seek membership in external organization : When a company wants to improve its quality performance, should it seek advice from an external organization? Why would it seek membership in an external organization? Explain what is the molar mass of the unknown substance : A solution containing .2g of an unknown substance in 2.5 g of cyclohexane is found to freeze at 5.1 C what is the molar mass of the unknown substance What are some external quality management organizations : What are some external quality management organizations? What value do these organizations bring to each of their targeted industries? How does their presence enhance the particular industry they target? Estimate the temperature rise of the iron nail : Consider a hammer with a 1.2-kg head. Let it strike the head of a 12-g iron-alloy nail 16 times in a row, quickly. estimate the temperature rise (in degrees Celsius) of the iron nail Find minimum speed will allow the ball to clear the roof : You're 6.0 m from one wall of a house. You want to toss a ball to your friend who is 6.0 m from the opposite wall. The throw and catch each occur 1.0 m above the ground. find minimum speed will allow the ball to clear the roof Find out the concentration of pb2 : A second 1.0 mL sample is spiked with 2.0 microliters of a 1000 ppb Pb2+ standard and diluted to 5.0 mL, yielding an Sspike of 0.4. Determine the concentration of Pb2+ in the original sample of blood.

### Write a Review

#### Steps in the mechanism for the following reaction

Show all the steps in the mechanism for the following reaction, When benzene is mixed with deuterated sulfuric acid, deuterium is slowly incorporated onto the ring. Show the mechanism for this reaction and explain how this relates the sulfonation of ..

#### Prior to placing piece of metal into the graduated cylinder

This assignment inhibits chemistry Laboratory Questions.

#### Write the structures of the saytzeff elimination

Write the structures of the saytzeff elimination

#### Calculate ph - chemistry questions

Chemistry Questions on Calculate P H

#### How many mols of hydrogen can produce

how many mols of H 2 can produce

#### Analysis of corrosion mechanisms

Analysis of corrosion mechanisms and preventative measures

#### Chemical and pharmaceutical science

Write an equation for the formation of an acetal from reaction of excess methanol with benzaldehyde in the presence of an acid catalyst.

#### Calculate the approximate sulphur

Calculate the approximate SO 2 mass emission in lb/day.

#### What is the structure - stereochemistry

What is the structure (including functional groups)? Stereochemistry (racemic or single enantiomer)?

#### Design a qualitative analysis scheme

Design a qualitative analysis scheme

#### What will be the resultant pressure

What will be the resultant pressure when the stopcock is opened?

#### The 1h nmr spectrum

Integrals for some of the resonances in the 1H NMR spectrum are higher than they should be due to the shear number of hydrogens in this compound