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
Lana71 [14]
3 years ago
9

A 255 mL round--bonom flask is weighed and found to have a mass of 114.85 g. A few millimeters of an easily vaporized liquid are

added to the flask and the flask is immersed in a boiling water bath. All of the liquid vaporizes at the boiling tempentture of water, filling the flask with vapor. When all of the liquid has vaporized, the flask is removed from the bath, cooled, dried, and reweighed. The new mass of the flask and the condensed vapor is 115.23 g. Which of the following compounds could the liquid be?
a. C₄H₁₀b. C₃H₇OHc. C₂H₆d. C₂H₅OHe. C₄H₉OH
Chemistry
1 answer:
Alex17521 [72]3 years ago
4 0

Answer: Option (d) is the correct answer.

Explanation:

According to the given situation, mass of compound will be calculated as follows.

Mass of compound = mass of flask and condensed vapor - mass of flask

                                 = 115.23 - 114.85

                                = 0.38 g

Volume (V) = 255 mL = 255 \times 10^{-6} m^{3}        (as 1 ml = 10^{-6} m^{3})

Pressure (P) = 101325 Pa

Temperature = 100^{o}C = (100 + 273) K = 373 K

Now, according to the ideal gas equation, PV = nRT

and, moles of compound n = \frac{PV}{RT}

                     = \frac{101325 \times 255 \times 10^{-6}}{8.314 \times 373}

                     = 0.008332 mol

As, molar mass of compound = \frac{mass}{\text{no. of moles}}

                                                  = \frac{0.38}{0.008332}

                                                  = 46 g/mol

Therefore, the compound is C_{2}H_{5}OH (molar mass = 12 x 2 + 5 x 1 + 16 + 1 = 46 g/mol).

Thus, we can conclude that out of the given options the liquid could be C_{2}H_{5}OH.  

You might be interested in
How a cation is formed by an atom?​
fenix001 [56]

Answer:

Cations are positively charged atoms and hence we need to make the atom positively charged in order to get a cation

We know that an atom is neutral as a whole, so we have equal number of electrons and protons

since we cannot mess with the number of protons in an atom, we have to do it by altering the number of electrons

If we reduce the amount of electrons in an atom, the net charge will be positive and hence a cation will be formed

4 0
3 years ago
6. If the broken wire of the top branch
vagabundo [1.1K]

Answer: When two light bulbs are connected in parallel, which is true? A. The total resistance is less than the resistance of either bulb alone. B. The Voltage provided

Explanation:

3 0
2 years ago
How many truck stop by the store on Wednesday
siniylev [52]

Answer:

More information so I can answer please.

Explanation:

7 0
2 years ago
How long would it take Jesse, with an acceleration of -2.50 m/s², to bring his bicycle, with an initial velocity of 13.5 m/s, to
lbvjy [14]

Answer:

i am so sorry. i do not have a answer but i am trying to find questioms i can answer

6 0
2 years ago
Substance X has a fixed volume, and the attraction between its particles is strong. Substance Y has widely spread out particles
DedPeter [7]

Answer: X is a Solid; Y is a Gas

Explanation:

There are three (3) states of matter. They are: Solid, Liquid and Gases.

Substance X and Y, belong to the states of matter.

A Solid is a substance that retains its SIZE and SHAPE without need of a container (as opposed to a liquid or gas).

Thus, it will most likely be concluded that: substance X is a Solid; while Y is a Gas

4 0
3 years ago
Other questions:
  • How many molecules are in a 189 g sample of carbon tetrabromide, CBr4 ?
    5·1 answer
  • The normal boiling point for h2se is higher than the normal boiling point for h2s . this can be explained by
    13·1 answer
  • Why do plant animal cells both have mitochondria?
    13·1 answer
  • Water _____.
    5·2 answers
  • POINTS!!!!!!!!!!................................................................................................................
    8·2 answers
  • 5. How many atoms are in 1.00 mol of carbon atoms?
    12·1 answer
  • Stuck at this. Can anyone help me pls? ​
    15·1 answer
  • 80) Which one of the following should have the lowest boiling point? Group of answer choices HCl H2S PH3 H2O SiH4
    9·1 answer
  • Which element is the most reactive?<br> sodium<br> nickel<br> carbon<br> oxygen
    11·1 answer
  • hi there I have a question see my teacher wants me to record my self in how to solve a math problem but am so scared of many rea
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!