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
Mars2501 [29]
3 years ago
9

An atom of the most common isotope of neutral potassium has a nucleus composed of 19 protons as well as

Biology
1 answer:
Paul [167]3 years ago
4 0
Neutral potassium also contains 19 electrons and 21 neutrons.
You might be interested in
Which of the following statements is true?
Kamila [148]

Answer:

the answer is B = all living things are made of the same elements

5 0
1 year ago
Kathy was making liquid growth medium for plants. The pH of the original solution was 8. The optimal pH for plant growth is 6. W
liubo4ka [24]

If referring to the question: Kathy was making liquid growth medium for plants. The pH of the original solution was 8. The optimal pH for plant growth is 6. What was the best compound to add to make it pH=6?

A) KOH

B) HCL

C) Water

D) No answer provided

Then the correct answer would be option B, to add HCL, known as Hydrochloric acid to lower the pH to 6.

In science, pH is a scale used to measure the acidity of a solution or its basicity. The scale ranges from 0 to 14. A pH of 7 would mean that the given solution is neutral, lower than 7 equates to an acidic solution, while anything above 7 becomes increasingly basic.

Option A is to add KOH, or potassium hydroxide to the original solution whose starting pH is 8. KOH is a solution whose pH is above 8,  a strong base, and is often used to increase the pH of a solution. In the question it states what the desired pH is 6, therefore we want to lower, not increase the pH. This makes option A incorrect.

Water is a neutral solution. Even though it is neutral, it is not used to neutralize basic or acidic solutions. Acid or bases may be added to water to create very diluted solutions that are nearly neutral despite containing a strong base or acid, but this is a different process than neutralization and will not give the desired pH. Option C is also wrong.

Option B is correct because HCL, known as hydrochloric acid is a strong acid, commonly used to lower the pH of a solution by increasing the concentration of hydrogen ions. Since we start with a pH of 8 and wish to achieve a pH of 6, HCL is the correct component to add to the solution. Due to option B being correct, option D that states that no answer is provided, is incorrect.

For more on pH visit:

brainly.com/question/491373?referrer=searchResults

8 0
3 years ago
Light penetrates the clear water of the open ocean more deeply than it does lake
SOVA2 [1]
The answer is A: phytoplankton provides nutrients to consumers in the ecosystem.

Hope this helps:)
6 0
3 years ago
After a forest fire, which type of organisms will begin secondary succession?
evablogger [386]

Answer: honestly i just dont know im here for the points thanks broski

Explanation:

4 0
3 years ago
Define the verb "adapt". Does survival in a particular environment through coping is synonymous with evolution? Why or why not?
notsponge [240]

Answer:

The word adapt means to get adjusted to a change.

yes, survival in a certain environment is similar to evolution. Both must use adaptation in order for life to keep living through changes in the environment. Each help life sustain itself in a very unique way.

Explanation:

4 0
3 years ago
Other questions:
  • Help!!! quick!!!!!!!​
    14·2 answers
  • Oceanic crust is generally lower in elevation than continental crust because oceanic _____ is _____ than continental crust.
    10·1 answer
  • Explain what is meant by the statement, "Cells are very different, yet very similar."
    12·2 answers
  • Which of the following phyla contains only marine animals?
    11·2 answers
  • Protein structures have several different levels of organization. The primary structure of a sequence. The secondary and tertiar
    9·1 answer
  • Erosion is a destructive force that
    7·2 answers
  • Name the four levels of group organization of living things in order of increasing complexity
    5·1 answer
  • Use the diagram below to answer the following questions for 1 point each:
    14·1 answer
  • Which element of an original work can be changed in an adaptation? Theme. Story. Setting. Main idea.
    8·1 answer
  • What are the following a basin, channel, confluence, riparian zone?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!