1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
tekilochka [14]
2 years ago
10

At a certain temperature the vapor pressure of pure acetyl bromide is measured to be . Suppose a solution is prepared by mixing

of acetyl bromide and of heptane . Calculate the partial pressure of acetyl bromide vapor above this solution. Round your answer to significant digits. Note for advanced students: you may assume the solution is ideal.
Chemistry
1 answer:
Rudik [331]2 years ago
8 0

Answer:

0.17 atm

Explanation:

Raoult´s law can be applied in solving this problem:

Pa= XaPºa   (a= acetyl bromide in this case)

where Pa = partial pressure acetyl bromide

         Xa = mole fraction of acetyl bromide in the solution

          Pºa=  vapor pressure of pure acetyl bromide = 0.75 atm(given)

Hence we can find the mole fraction of the acetone in the mixture:

Let the number of moles of acetone be a and the number of moles of thiophene be t

Xa = mol of a / ( mol of a + mol of t )        

We now have;

Molar Weight of  a= 112.95 g/mol  

number of moles of a = 51.8 g/mol x 1 mol/122.95 g  =  0.42 moles

Molar Weight of t = 84.14 g/mol  

number of moles of  t = 123 g x  1mol/84.14 g= 1.46 mol

mole fraction of a; Xa = 0.42/ (0.42 + 1.46) = 0.22

Pa = 0.22 x 0.75 atm = 0.17 atm

You might be interested in
What identifies an ion
bezimeni [28]

Answer:

Identifying whether or not an element is an ion is a very simple process. Identify the charge of the element. ... The number of electrons is equal to the atomic number minus the charge of the atom. Refer to an element with either a positive or negative charge as an ion.

7 0
3 years ago
Which of the following is not an example of a molecule
brilliants [131]
C is the correct answer
6 0
3 years ago
Which elements have the most similar chemical properties?
bixtya [17]

Answer:

a. Be and Mg

Explanation:

Be (beryllium) and Mg (magnesium) are both found in the alkaline earth metals family (group 2) on the periodic table. Elements in the same family or group have similar properties,

Ca and Br are in groups 2 and 17

Cl and Ar are in groups 17 and 18

Na and P are in groups 1 and 15

4 0
3 years ago
Read 2 more answers
national defense, currency, post office, foreign affairs, & interstate commerce. b. charter local governments, education, pu
katen-ka-za [31]

Answer And Explanation:

Option C is correct.

Lend and borrow money, taxation, law enforcement, charter banks and transportation.

Some of the powers that were mentioned in the other options that weren't concurrent powers (that is, they belong to either the state government alone or the federal government alone) & disqualified them from being the answer include:

National defence (federal), Currency (federal), foreign affairs (federal), intrastate commerce (state) etc.

3 0
3 years ago
How to make crystals using table salt?<br> Please help I"ll mark you as the BRAINLIEST!!!
Dafna11 [192]

Answer:

1.heat a pan of water with just a little bit of water,have a boil

2.chosse ure salt

3.stir in has much salt has u can than take the pan off the heat

4.pour the mix into a glass jar

5.tie a string to an objeet that can lay accross the top and put just the string in ure mix

Explanation oh and look at it everyday       hope that helps

8 0
3 years ago
Other questions:
  • To measure the temperature of water in a chemistry expierment You should use the Fahrenheit scale. True or false
    10·1 answer
  • Which element x or y has more protons, assume both have the same energy level?
    12·1 answer
  • Heterogeneous mixture with larger particles that never settle
    11·1 answer
  • The volume of solution in a test tube is measured to be 0.0067 liter. Which digits in A certain satellite orbiting Earth has a s
    12·1 answer
  • 1) Which of the following is the smallest unit of a chemio<br> Tallest unit of a chemical element?
    14·1 answer
  • How many atoms are in 2.56 g of Si?
    14·1 answer
  • Which statement about the density of cold water is most likely correct?
    6·2 answers
  • A tow truck uses a force of 100 N to pull a car 10 meters. How much work was done?
    5·2 answers
  • Water is thee what? Please answer ASAP!
    5·1 answer
  • If lon X has a charge of 2+ and lon Y has a charge of 1-, the chemical the formula of the ionic
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!