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
kozerog [31]
3 years ago
14

Where do I find my questions that were answered??

Chemistry
2 answers:
LenaWriter [7]3 years ago
7 0

Answer:

were do you find questions that were answered it depends like what ever you need help look up on the internet then put the question then put brainly and it will pop up only some will not all questions and also if you ask a question somebody answers and they will answer some won't some will

Explanation:

balandron [24]3 years ago
5 0

Answer: You go to the notification bell at the top right

Explanation:

You might be interested in
A gas is being cooled down. Which option describes what will happen?
Yakvenalex [24]
D) The gas particles will move slower. Eventually they will start clumping together and become a liquid

I think its D but I could be wrong
8 0
2 years ago
Read 2 more answers
When a substance dissolves, it undergoes a _____.
babunello [35]
A physical change.  chemical changes require the molecule itself to change.  If you put NaCl into solution, the NaCl is still there which is evident by the fact that if you lower the amount of water, NaCl precipitates out.
7 0
3 years ago
Read 2 more answers
Please help me solve this worksheet
Vitek1552 [10]

Answer:search definitions

Explanation:

7 0
4 years ago
How many moles are in 45g c6h5no2
Andrews [41]

Answer:

there are 13 moles in the compound

5 0
3 years ago
The activation energy of a certain uncatalyzed biochemical reaction is 50.0 kJ/mol. In the presence of a catalyst at 37°C, the r
rodikova [14]

Answer:

E₁ ≅ 28.96 kJ/mol

Explanation:

Given that:

The activation energy of a certain uncatalyzed biochemical reaction is 50.0 kJ/mol,

Let the activation energy for a catalyzed biochemical reaction = E₁

E₁ = ??? (unknown)

Let the activation energy for an uncatalyzed biochemical reaction = E₂

E₂ = 50.0 kJ/mol

    = 50,000 J/mol

Temperature (T) = 37°C

= (37+273.15)K

= 310.15K

Rate constant (R) = 8.314 J/mol/k

Also, let the constant rate for the catalyzed biochemical reaction = K₁

let the constant rate for the uncatalyzed biochemical reaction = K₂

If the  rate constant for the reaction increases by a factor of 3.50 × 10³ as compared with the uncatalyzed reaction, That implies that:

K₁ = 3.50 × 10³

K₂ = 1

Now, to calculate the activation energy for the catalyzed reaction going by the following above parameter;

we can use the formula for Arrhenius equation;

K=Ae^{\frac{-E}{RT}}

If K_1=Ae^{\frac{-E_1}{RT}} -------equation 1     &

K_2=Ae^{\frac{-E_2}{RT}} -------equation 2

\frac{K_1}{K_2} = e^{\frac{-E_1-E_2}{RT}

E_1= E_2-RT*In(\frac{K_1}{K_2})

E_1= 50,000-8.314*310.15*In(\frac{3.50*10^3}{1})

E_1 = 28957.39292  J/mol

E₁ ≅ 28.96 kJ/mol

∴ the activation energy for a catalyzed biochemical reaction (E₁) = 28.96 kJ/mol

8 0
3 years ago
Other questions:
  • Molarity and mole fraction are quantitative descriptions of---------
    14·1 answer
  • 3 & 4 Help pleaseeeee
    14·1 answer
  • Which of the following aqueous solutions are good buffer systems?
    11·1 answer
  • Oxide formation by heating element in oxygen atmosphere are best classified as which type of reaction?a. Synthesis b. Double dis
    11·1 answer
  • Which formula represents a non polar molecule with polar covalent bonds
    12·2 answers
  • A hurricane and a typhoon are the same thing true or false?
    9·2 answers
  • A chemical company produces ammonia using the following reaction:
    12·1 answer
  • 3.88g of NaOH is required to neutralize a spill of hydrochloric acid. A 0.516M solution of NaOH is available for use.
    6·1 answer
  • Weathering and erosion affect the most in the formation of igneous rock. A. True B. False
    10·1 answer
  • Facts about radiation in the human body
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!