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
Dmitry_Shevchenko [17]
3 years ago
8

Methyl salicylate, C8H8O3, the odorous constituent of oil of wintergreen, has a vapour pressure of 1.00 torr at 54.3oC and 10.0

torr at 95.3oC.
a. What is its vapour pressure at 25oC?
b. What is the minimum number of liters of air that must pass over a sample of the compound at 25oC to vaporize 1.0 mg of it?
Chemistry
1 answer:
abruzzese [7]3 years ago
5 0
<span>Use the Arrhenius equation. Use p1 and p2 and T1 and T2 and solve for Ea (actgivation energy) in Joules, then plug that back into the Arrhenius equation and either p1 or p2 to calculate p at 25C.</span>
You might be interested in
What is the most important characteristic in determining an element’s properties?
lozanna [386]
The number of electrons. The valence (outer) shell is particularly important.
4 0
3 years ago
2Ag (s) + H2S(s) → Ag2S(s) + H2(g)
Advocard [28]

Answer: Oxidation half: 2Ag\rightarrow 2Ag^++2e^-

Reduction half: 2H^++2e^-\rightarrow H_2

Explanation:

Oxidation-reduction reaction or redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.

2Ag(s)+H_2S(s)\rightarrow Ag_2S(s)+H_2(g)

Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation state of the substance increases.

Oxidation half: 2Ag\rightarrow 2Ag^++2e^-

Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation state of the substance gets reduced.

Reduction half: 2H^++2e^-\rightarrow H_2

8 0
2 years ago
7. Use the concepts of relative abundance and relative weight to explain why carbon has an atomic mass of 12.011 amu when there
Dvinal [7]

The  uncertainties  of  the  delta  measurements  and  the  uncertainty  of  the  atomic  weight  derivedfrom  the  best  measurement  of  isotopic  abundances  constrain  the  number  of  significant  figures  in  theatomic-weight values of the upper and lower bounds. For carbon, the fifth digit after the decimal pointis uncertain because of the uncertainty value of 0.000 027. Therefore, the number of significant digitsin the atomic-weight value is reduced to four figures after the decimal point. The Commission may rec-ommend  additional  conservatism  and  reduce  the  number  of  significant  figures  further.  For  the  lowerbound of carbon, 12.009 635 is truncated to 12.0096. For an upper bound, the trailing digit is increasedto ensure the atomic-weight interval encompasses the atomic-weight values of all normal materials. Inthe case of carbon, the upper bound is adjusted from 12.011 532 to 12.0116 to express four digits afterthe decimal point. The lower and upper bounds are evaluated so that the number of significant digits ineach  is  identical.  If  a  value  ends  with  a  zero,  it  may  need  to  be  included  in  the  value  to  express  therequired number of digits. The following are examples of lower and upper atomic-weight bounds foroxygen that could be published by the Commission in its various tables.

---------------------------

Extracted from" Atomic weights of the elements 2009 (IUPAC Technical Report)"

5 0
3 years ago
How many moles of O2 are needed to burn 2.56 moles of CH3OH?
lukranit [14]

Answer:

n_{O_2}=3.84molO_2

Explanation:

Hello!

In this case, since the combustion reaction of methanol is:

CH_3OH+\frac{3}{2} O_2\rightarrow CO_2+2H_2O

In such a way, since there is 1:3/2 mole ratio between methanol and oxygen, we can compute the moles of oxygen that are needed to burn 2.56 moles of methanol as shown below:

n_{O_2}=2.56molCH_3OH*\frac{\frac{3}{2}molO_2}{1molCH_3OH} \\\\n_{O_2}=3.84molO_2

Best regards!

6 0
2 years ago
A crucible is a severe test or trial. It is also a vessel in which materials are melted at high temperatures to produce a more r
zhannawk [14.2K]

In this drama, a crucible would represent the constant building action leading to the climax of the pot.

What is crucible?

A crucible is a ceramic as well as metal vessel used to melt metals or subject other substances to extremely high temperatures. Crucibles can be made from any material that can withstand temperatures high enough to melt and otherwise change their contents, despite historically being most frequently made of clay. The crucible's shape has changed over time, with designs that take into account both regional variation and the process for that they are used. The earliest crucible forms date to Iran and Eastern Europe in the sixth or fifth millennia B.C.

Similar to the contents of a crucible, the characters seem to be constantly enduring severe trials; in this case, the witching trials. The crucible would, in my opinion, symbolize the town itself and its residents. The symbolism of this suggests a theme of the townspeople going through the witching trials and coming out with a "refined" lesson. The unnecessary accusations and trials will teach a hard lesson to the people who live within the town and influence their future.

To learn more about crucible click on the given link:
brainly.com/question/27816330
#SPJ4

4 0
1 year ago
Other questions:
  • The density of an unknown gas is found to be 3.44 g/l at standard temperature and pressure (stp). what is the molar mass of this
    14·1 answer
  • How many atoms of carbon (C,12.01 g/mol) are in a diamond with a mass of 0.568 g?
    8·1 answer
  • If anyone will do this answer correct<br> I will mark you as Brainliest. <br> Question no. 4 and 5.
    15·2 answers
  • Predict which surface will melt ice faster. Wood or metal? Why?
    10·2 answers
  • Freediving is an activity in which a person dives, sometimes to great depth, without the use of scuba gear. The diver must hold
    7·1 answer
  • Cumene (isopropylbenzene) is a relatively inexpensive commercially available starting material. Show how you could prepare m-iso
    15·1 answer
  • On the graph, which shows the potential energy curve of two N atoms, carefully sketch a curve that corresponds to the potential
    5·1 answer
  • Snow and ice absorbs much of the Sun's radiant energy<br><br>True or False?​
    15·1 answer
  • How might someone dispute the results of your investigation? How might you counter the argument?
    9·1 answer
  • 7.744 liters of nitrogen are contained in a container. convert this amount to grams
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!