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
Maru [420]
3 years ago
10

The vapour pressure of pure benzene at 20 °C is 75 Torr and that of pure methylbenzene is 25 Torr at the same tempera-ture. In a

n equimolar mixture xbenzene = xmethylbenzene = 1 so the 2 partial vapour pressure of each one in the mixture is_________.
Chemistry
1 answer:
ss7ja [257]3 years ago
3 0

Answer:

Benzene: 37.5 Torr

Methylbenzene: 12.5 Torr

Explanation:

By Raoult's Law, each substance in a gas mixture contributes to the total pressure of the mixture proportionally to their respective mole fraction. So,

Ppartial = x*P°

Where x is the mole fraction (0.5 for each one because it's equimolar), and P° is the vapor pressure.

Benzene: Ppartial = 0.5 * 75 = 37.5 Torr

Methylbenzene: Ppartial = 0.5 * 25 = 12.5 Torr

You might be interested in
A 4.215 g sample of a compound containing only carbon, hydrogen, and oxygen is burned in an excess of oxygen gas, producing 9.58
Scilla [17]

Answer:

\% O=27.6\%

Explanation:

Hello,

In this case, for the sample of the given compound, we can compute the moles of each atom (carbon, hydrogen and oxygen) that is present in the sample as shown below:

- Moles of carbon are contained in the 9.582 grams of carbon dioxide:

n_C=9.582gCO_2*\frac{1molCO_2}{44gCO_2}*\frac{1molC}{1molCO_2}  =0.218molC

- Moles of hydrogen are contained in the 3.922 grams of water:

n_H=3.922gH_2O*\frac{1molH_2O}{18gH_2O} *\frac{2molH}{1molH_2O} =0.436molH

- Mass of oxygen is computed by subtracting both the mass of carbon and hydrogen in carbon dioxide and water respectively from the initial sample:

m_O=4.215g-0.218molC*\frac{12gC}{1molC} -0.436molH*\frac{1gH}{1molH} =1.163gO

Finally, we compute the percent by mass of oxygen:

\% O=\frac{1.163g}{4.215g}*100\% \\\\\% O=27.6\%

Regards.

5 0
3 years ago
Many different processes, both natural and human-caused, can release carbon dioxide into the atmosphere. Which of the following
inn [45]

Answer:

carbon dioxide is added to the atmosphere naturally when organisms respire or decompose,  

Explanation:

5 0
3 years ago
Read 2 more answers
How many moles of sucrose (C12H22O11) would be in 8.7 L of a 1.1 M solution of sucrose?
poizon [28]

Answer:

9.57 mol.

Explanation:

<em>Molarity is defined as the no. of moles of a solute per 1.0 L of the solution.</em>

<em />

<em>M = (no. of moles of solute)/(V of the solution (L)).</em>

<em></em>

∴ M = (no. of moles of sucrose)/(V of the solution (L)).

1.1 M = (no. of moles of sucrose)/(8.7 L).

<em>∴ no. of moles of sucrose = (1.1 M)(8.7 L) = 9.57 mol.</em>

5 0
3 years ago
Which of the following affect climate ?​
liberstina [14]

Answer:

d

Explanation:

the farther you are from the equater the dolder it is.

8 0
3 years ago
Read 2 more answers
The time required for one-half of the atoms from a sample of a radioactive substance to decay is called its _____.
Orlov [11]
A.) half - life of a radioactive substance is defined as the time during which concentration of the substance becomes half the initial value.
8 0
3 years ago
Read 2 more answers
Other questions:
  • In terms of electrons why does a cation have a positive charge
    15·1 answer
  • 1093.5 rounded into 3 sig figs
    13·1 answer
  • Os etapas que devem sem compridas para obter separadamente os componentes (a as substâncias ) de uma mistura de água ,sal e arei
    5·1 answer
  • What must occur ??????
    10·1 answer
  • What is the emperical formula for a compound containing 68.3% lead, 10.6% sulfur, and the remainder oxygen? a. Pb2SO4 b. PbSO3 c
    14·2 answers
  • Which element does the electron configuration 1s2s2p2 represent?
    6·1 answer
  • What is the MOST important factor in the changing of the seasons?
    8·1 answer
  • How many oxygen atoms were used to write Felicia’s name?
    9·1 answer
  • Please help fast please please
    14·1 answer
  • What type of molecule is being modeled?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!