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
melomori [17]
3 years ago
11

I need help I can't chose between A or D

Chemistry
2 answers:
djyliett [7]3 years ago
7 0
That’s a hard one, but honestly i would go with a.
maria [59]3 years ago
7 0

Answer:

Increasing the temperature  

Step-by-step explanation:

Increasing the temperature gives the reacting molecules more kinetic energy.

More of the molecular collisions will have enough energy to get over the activation energy barrier and the reaction rate will increase.

B) is wrong. If you halve the amounts in the recipe for the experiment, the concentrations stay the same. There is no change in the rate of reaction.

C) is wrong. If you decrease the surface area of a solid, there will be fewer of its molecules at the surface to react. The rate of reaction will decrease.

D) is wrong. If you decrease the concentrations of the reactants, their molecules will be further apart. There will be fewer collisions per second, so the reaction rate will decrease.

You might be interested in
25.0 mL of a hydrofluoric acid solution of unknown concentration is titrated with 0.200 M NaOH. After 20.0 mL of the base soluti
lesantik [10]

Answer:

[HF]₀ = 0.125M

Explanation:

NaOH + HF => NaF + H₂O

Adding 20ml of 0.200M NaOH into 25ml of HF solution neutralizes 0.004 mole of HF leaving 0.004 mole NaF in 0.045L with 0.001M H⁺ at pH = 3.   This is 0.089M NaF and 0.001M HF remaining.

=> 45ml of solution with pH = 3 and contains 0.089M NaF from titration becomes a common ion problem.

                HF  ⇄    H⁺    +      F⁻

C(eq)       [HF]     10⁻³M      0.089M (<= soln after adding 20ml 0.200M NaOH)

Ka = [H⁺][F⁻]/[HF]₀ => [HF]₀ = [H⁺][F⁻]/Ka

[HF]₀ = (0.001)(0.089)/(7.1 x 10⁻⁴) M = 0.125M

6 0
3 years ago
a lab is performed to do the study of pH and heat on the function of the catalase enzyme found in carrot plants. what would be c
ad-work [718]
It would be the ph and heat
3 0
3 years ago
LOLZ PLZ HELP PLZZZZ
Kipish [7]
It smells so bad that no one or animal will get near it
5 0
3 years ago
The most condensed state of matter is (4 points)
Karo-lina-s [1.5K]
The most condensed state of matter is solid
7 0
3 years ago
Read 2 more answers
The molecular formula for butane is C4H10. Determine the percent composition for
masya89 [10]

%Mass

Ar C = 12 g/mol, Mr C₄H₁₀ = 58 g/mol, Ar H = 1 g/mol

\tt C=\dfrac{4.12}{58}\times 100\%=82.8\%\\\\H=100\%-82.8\%=17.2\%

or

\tt H=\dfrac{10.1}{58}\times 100\%= 17.2\%

4 0
3 years ago
Other questions:
  • An average tornado has a pressure of around 630 torr. What is this equivalent to in mmHg, atm and kPa? Show your work.
    5·1 answer
  • What is the energy of light associated with a transition from n=3 to n=8 in a hydrogen atom? Does this represent absorption or e
    6·1 answer
  • True or false transuranium elements are synthetic elements with atomic #’s of 93 or higher.
    5·1 answer
  • Menthol, the substance we can smell in mentholated cough drops, is composed of c, h, and o. a 9.045×10−2 −mg sample of menthol i
    7·1 answer
  • What is Keq for the reaction 2HCl(9) = H2(g) + Cl2(g)?
    9·1 answer
  • The above shows a balloon full of gas which has a volume of 120.0 mL
    9·1 answer
  • You read a primary source and a secondary source that discuss the same
    7·2 answers
  • Please help on my test
    9·1 answer
  • An open nanometer is filled with mercury and connected to a container of hydrogen gas. The mercury level is 57mm higher in the a
    9·1 answer
  • True or false a solid has a constant shape and volume
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!