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
Zolol [24]
3 years ago
7

What is the activation energy of a reaction whose rate constant doubles when the temperature is increased from 300K to 350K (ass

uming that the activation energy and pre-exponential factor are both temperature independent)? Express your answer as a number with units.
Chemistry
1 answer:
bekas [8.4K]3 years ago
3 0

Answer:

12.1 kJ

Explanation:

For this problem, we are going to use the Arrhenius Equation.

ln(\frac{k_{2} }{k_{1}})=\frac{E_{a} }{R} (\frac{1}{T_{1}} -\frac{1}{T_{2}} )\\ln(\frac{2}{1} )=\frac{E_{a} }{8.314} (\frac{1}{300}-\frac{1}{350} )

We are going to solve for activation energy, E_{a}.

E_{a} =12.1 kJ

You might be interested in
Cesium has a radius of 272 pm and crystallizes in a body-centered cubic structure. What is the edge length of the unit cell
olchik [2.2K]

Answer: Edge length of the unit cell = 628pm

Explanation: For a body centred cubic structured system, the relationship between the edge length of the unit cell and radius of the atoms in the structure is

Edge length of Unit cell (a) = (4R)/(√3)

R = 272pm = (272 × (10^-12))m = (2.72 × (10^-10))m

a = (4 × (2.72 × (10^-10)))/(√3)

a = (6.28157 × (10^-10))m = 628pm

4 0
3 years ago
Which of these is a benefit of fuel cell cars?
Otrada [13]

Answer:

A.

Explanation:

There are no vehicle emissions other than water vapor. This means no pertroleum products and no fossil fuels. :)

-Sienna Sushi

5 0
3 years ago
Read 2 more answers
If a temperature increase from 10.0 ∘C to 22.0 ∘C doubles the rate constant for a reaction, what is the value of the activation
maria [59]

The activation energy barrier is 40.1 kJ·mol⁻¹

Use the Arrhenius equation

\ln( \frac{k_2 }{k_1 }) = (\frac{E_{a} }{R })(\frac{ 1}{T_1} - \frac{1 }{T_2 })\\

\ln( \frac{2k }{k}) = (\frac{E_{a} }{\text{8.314 J} \cdot \text{K}^{-1} \text{mol}^{-1} })(\frac{ 1}{\text{283.15 K}} - \frac{1 }{\text{295.15 K }})\\

\ln2 = (\frac{ E_{a} }{\text{8.314 J} \cdot \text{K}^{-1} \text{mol}^{-1}}) \times 1.436 \times10^{-4}\\

\ln2 = E_{a} \times 1.727 \times 10^{-5} \text{ mol} \cdot \text{J}^{-1}

E_{a} = \frac{\ln2 }{ 1.727 \times10^{-5}\text{ mol} \cdot \text{J}^{-1}}\\

E_{a} = \text{40 100 J}\cdot\text{mol}^{-1} = \textbf{40.1 kJ}\cdot \textbf{mol}^{-1}

3 0
3 years ago
Which of the following descriptions accurately describes Boyle’s law?
photoshop1234 [79]

The pressure of gas in your lungs is inversely proportionate to the volume in your lungs.

7 0
3 years ago
All of the covalent carbon-carbon bonds in unsaturated hydrocarbons share 2 pairs of electrons.
Evgen [1.6K]

False. carbon-carbon bonds that share 2 pairs of electrons are double bonds. An unsaturated hydrocarbon isnt necessary to only have double bonds. they can also have single bonds or triple bonds.

5 0
3 years ago
Read 2 more answers
Other questions:
  • What causes pressure inside an inflated soccer ball?
    11·2 answers
  • A sample of magnesium is burned in oxygen to form magnesium oxide. What mass of oxygen is consumed if 74.62 g magnesium oxide is
    5·1 answer
  • Which separation method would be most successful in separating the components of a homogeneous mixture?
    7·2 answers
  • In the synthesis reaction, the white powder produced is magnesium oxide (mgo, mm = 40.3 g/mol). how many moles of magnesium oxid
    10·1 answer
  • I just need some help getting the answers for this portfolio, but if someone could not only give the answers, but also explain h
    12·1 answer
  • Ashmita pours 425 mL of Methanol into an insulated cup. (The density of Methanol is 0.792 g/mL, and the specific heat of liquid
    9·1 answer
  • A car gets 28.0 miles/gallon of gas on the highway. What is this in<br> km/L?
    11·1 answer
  • 0.2 moles of aluminum has a mass of 5.4 g. what is The molar mass of aluminum​
    14·1 answer
  • Animals adapted for lack of water and extremes in temperature are found in which biome?
    14·2 answers
  • PLZ HELP IM NO SURE IF I PUT THE RIGHT ANSWER!!!!!!!!
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!