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
Kazeer [188]
3 years ago
11

What is the approximate percent by mass of potassium in KHCO3?

Chemistry
1 answer:
lozanna [386]3 years ago
8 0

Answer:

The mass percent of potassium is 39%

Option C is correct

Explanation:

Step 1: Data given

Atomic mass of K = 39.10 g/mol

Atomic mass of H = 1.01 g/mol

Atomic mass of C = 12.01 g/mol

Atomic mass of O = 16.0 g/mol

Step 2: Calculate molar mass of KHCO3

Molar mass KHCO3 = 39.10 + 12.01 + 1.01 + 3*16.0

Molar mass KHCO3 = 100.12 g/mol

Step 3: Calculate mass percent of potassium (K)

%K = (atomic mass of K / molar mass of KHCO3) * 100%

%K = (39.10 / 100.12) * 100%

%K = 39.05 %

The mass percent of potassium is 39%

Option C is correct

You might be interested in
What is the pH range for an acid? <br> 0-7<br> 7-14<br> 7<br> 0
olga nikolaevna [1]
<h3>Answer: Choice A)  0-7</h3>

Explanation:

If the pH is between 0 and 7, then we have an acid.

If the pH is between 7 and 14, then we have an alkaline base.

If pH = 7, then it's neutral.

7 0
3 years ago
Read 2 more answers
Myth: A dead organism is the same as a nonliving thing in science.<br><br> Fact:<br><br> Evidence:
Ilya [14]

I recently did this assignment!

Instructions: Read each myth (untruth). Reword it to make a factual statement. Then, give two to three reasons why the myth is untrue. Use complete sentences and support your answer with evidence, using your own words.  

________________________________________

Answer:

Myth: A dead organism is the same as a nonliving thing in science.

o Fact: In science, dead is the same as nonliving.

o Evidence: Things that are nonliving never had the characteristics of life, and never will. Things that are dead once did have the characteristics of life, but when they die, they lose some of the characteristics. That is why dead and non-living are NOT the same thing.

Hope this helped!

Have an Amazing day!

~Lola

4 0
3 years ago
Read 2 more answers
The process of passing electricity through water to chemically separate it into hydrogen and oxygen is called what?
SVEN [57.7K]
<span>electrolysis of water.
</span>
3 0
3 years ago
Read 2 more answers
The jet stream is one of the key winds that moves air masses. in which direction does the jet stream in the united state general
OleMash [197]

The jet stream is one of the key winds that moves air masses at the direction from west to east it moves.

<h3>What are jet streams?</h3>

Jet streams are strong winds which are flow in the form of narrow bands in the upper part of the atmosphere. On the earth these winds are flows near the altitude of the tropopause. These winds carries weather systems and blows toward the colder northern air and due to the rotation of earth, its direction is from west to east.

Hence jet streams move winds from west to east direction.

To know more about jet streams, visit the below link:
brainly.com/question/791542

7 0
2 years ago
.......help me please !!
VikaD [51]

Answer:

that tuff

Explanation:

7 0
3 years ago
Other questions:
  • Needed help plzzz on this chemistry homework.
    13·1 answer
  • the constellation Orion appears in the eastern sky in December. Where would you expect it to appear in March, Why?
    5·1 answer
  • How many cm are equal to 1.45 m
    7·1 answer
  • A 0.652-g sample of a pure strontium halide reacts with excess sulfuric acid. the solid strontium sulfate formed is separated, d
    6·1 answer
  • 1. When you are underwater, sounds that you hear from above the water sound much quieter than when you are not underwater. Draw
    13·1 answer
  • (R)-Limonene is found in many citrus fruits, including oranges and lemons. Draw its structures and identify the relationship bet
    11·1 answer
  • It exists between polar covalent molecules
    12·1 answer
  • Which of the following elements has the largest atomic radius? (2 points)
    15·2 answers
  • 34. What is the frequency of a light whose wavelength is 660 nm? ​
    5·1 answer
  • Energy can interact with objects and cause them to ________ or change
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!