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
Kara shines a blue light and a red light onto paper as shown in the figure below. If the paper is
boyakko [2]

Answer:D. neither red nor blue

Explanation:

5 0
3 years ago
Suppose we have a 12.2 L sample containing 0.50 mol oxygen gas at a pressure of 1 atm and a temperature of 25 degrees celcius. I
snow_lady [41]

Answer:

c. 8.1 L

Explanation:

Given that:-

Moles of oxygen gas = 0.50 mol

According to the reaction shown below as:-

3O_2\rightarrow 2O_3

3 moles of oxygen gas on reaction gives 2 moles of ozone

Also,

1 mole of oxygen gas on reaction gives 2/3 moles of ozone

So,

0.50 mole of oxygen gas on reaction gives \frac{2}{3}\times 0.50 moles of ozone

Moles of ozone = 0.3333 mol

Pressure = 1 atm

Temperature = 25.0 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T = (25.0 + 273.15) K = 298.15 K  

Volume = ?

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 0.0821 L.atm/K.mol

Applying the equation as:

1 atm × V = 0.3333 mol × 0.0821 L.atm/K.mol × 298.15 K  

⇒V = 8.1 L

6 0
3 years ago
PLS ANSWER FAST WILL GIVE BRAINLY!!!!
castortr0y [4]
False because the sugar is just changing it’s form
7 0
3 years ago
Read 2 more answers
A sample contains 16 mg of polonium-218. After 12 minutes, the sample will contain 1.0 mg of polonium-218. What is the half life
mariarad [96]

Answer:

Half-life = 3 minutes

Explanation:

Using the radioactive decay equation we can solve for reaction constant, k. And by using:

K = ln2 / Half-life

We can find half-life of polonium-218

Radioactive decay:

Ln[A] = -kt + ln [A]₀

Where:

[A] could be taken as mass of polonium after t time: 1.0mg

k is Reaction constant, our incognite

t are 12 min

[A]₀ initial amount of polonium-218: 16mg

Ln[A] = -kt + ln [A]₀

Ln[1.0mg] = -k*12min + ln [16mg]

-2.7726 = - k*12min

k = 0.231min⁻¹

Half-life = ln 2 / 0.231min⁻¹

<h3>Half-life = 3 minutes</h3>

5 0
3 years ago
Which of the following represents the atomic number of an element?
Anna11 [10]

Answer:

The atomic number is the number of protons in the nucleus

4 0
3 years ago
Other questions:
  • PLEASE HELP I BEG YOU I REALY NEED HELP
    15·2 answers
  • Consider three possible atomic arrangements for cyanamide (CH 2 N 2 ): (a)H 2 CNN (b)H 2 NCN (c)HNNCH Using formal charges as a
    8·1 answer
  • Predict the effect of a mutation which limits the production of pigment in hair
    5·1 answer
  • Based on the chart, how are fish and dogs related?
    13·1 answer
  • What is the molarity of a solution that is made by adding 57.3 g of MgO to 500.0 mL of solutions
    12·1 answer
  • Which of the following is evidence that supports the idea of uniformitarianism?
    6·1 answer
  • PLEASE HELP!! What is the percentage by mass of solution formed by dissolving 27.0 grams of HCl in 102.0 grams of water? 26.5% 2
    13·1 answer
  • Which is the BEST definition for a chemical ? *
    10·1 answer
  • How many atoms in:
    13·1 answer
  • Downwelling is the process that moves cold, dense water from the ocean surface to the sea floor near the polar regions. How can
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!