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
anastassius [24]
3 years ago
13

A 4.5x10 to the negative 3 M solution of a weak acid is 6.3% dissociated at 25%C. In a 4.5x10 to the negative 4 M solution, the

percentage of dissociation would be
Chemistry
1 answer:
laila [671]3 years ago
4 0

Answer:

0.63%

Explanation:

The new Percentage of dissociation will be as = (6.3×4.5×10^-4)/4.5×10^-3

= 0.63%

You might be interested in
What is the most likely result of the pollution of a fresh water resource?
Troyanec [42]

Answer:

Loss of biodiversity in the wetlands.

Explanation: Pollution can be defined as the emission of toxic, poisonous and harmful chemical substances which are capable of causing environmental degradation and contamination.

Nitrogen pollution enters Earth’s freshwater resources from a variety of human activities, including the use of fertilizers and pesticides in agriculture. This nitrogen pollution has a negative effect on plants and animals living in fresh water. Certain wetland plants, however, are able to purify the water and restore it to its non-polluted state.

Hence, what would most likely increase the negative effects of nitrogen pollution is a loss of biodiversity in the wetlands i.e the various species of animal and plants.

6 0
3 years ago
Please help with this question.
marysya [2.9K]

Answer:

It is C.

Explanation:

4 0
3 years ago
Free Energy
ratelena [41]

Answer:

a) galvanic cell

b)electrolytic cell

c) i) K=6.27x10'34

ΔG°=198790 J

ii) K=3.58x10'-34

ΔG°= 191070 J

d) E°=0.278 v

ΔG°= -26827 J

Explanation:

a) There are two kinds of an electrochemical cell, the first is called "galvanic cells", and the second "electrolytic cell".

The fuel cells are capable of produce electric energy through chemical reactions. These reactions are often spontaneous. So, the galvanic cell has a negative value for Gibbs free energy.

b) The electrolytic cell increases the value of Gibbs energy, to positive values, due to the reactions are not spontaneous.

c) i) look image attached

ii) k = look image attached

ΔG° = -nFE° = - 6 X 95500 J/vmole x (-0.33 v)

ΔG° =-191070

d) E°= 0.0592 v/n x lg K

E°= 0.0592V / 1 X log 5.0X10'4

E°= 0.278 v

ΔG° = -nFE° = -1 x 96500 J/ vmole x 0.278v

ΔG° = -26827 J

5 0
3 years ago
Which statement describes the ocean floor?
Keith_Richards [23]

Answer: C

Explanation: The ocean floor is largely unexplored so no one knows what it is like.

4 0
2 years ago
I need Coefficient numbers!!!!!
KengaRu [80]
Not sure about #6 , but i got all the other answers

4 0
3 years ago
Other questions:
  • I WILL RATE BRAINLIEST! I JUST NEED HELP!
    7·2 answers
  • Which pair of elements can form an ionic compound? A) Two atoms of hydrogen B) One atom of sodium and one atom of fluorine C) On
    7·2 answers
  • ** ANSWER FAST I WILL MARK YOU BRAINLIEST AND GIVE 20 POINTS * * THIS IS A CHEMISTRY QUESTION SO PLEASE ONLY ANSWER IF YOU ARE G
    7·1 answer
  • What mass of NH3 (in grams) must be used to produce 5.65 tons of HNO3 by the Ostwald process, assuming an 80.0 percent yield in
    12·1 answer
  • What is the oxidation number of an element?
    14·1 answer
  • -What important role does chemistry play in society?
    6·1 answer
  • I really need help ! This is science
    11·2 answers
  • 5) 3Na2SO4
    12·1 answer
  • I need you to solve for me plzzzzzz
    8·1 answer
  • Determine the oxidation number of CI element in each of the following species:
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!