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
Yuki888 [10]
4 years ago
13

Which example does not involve knowledge of chemistry?

Chemistry
2 answers:
Trava [24]4 years ago
6 0

I would honestly say C. All others have ingredients in them that makes them work, the combination of stuff to put out the fire, film is made from a certain material and drugs are an ovbious mixture. Looking at the stars is the only thing you don't need chemistry for.

iren [92.7K]4 years ago
4 0
C an astronomer identifying the stars
You might be interested in
A student examines the temperature and precipitation on a given day using a thermometer and a rain gauge.The student is measurin
Vaselesa [24]
It is D. because the student is using  a <span> thermometer and a rain gauge </span>
7 0
3 years ago
Which correctly lists two characteristics of crystal faces that define crystal systems?
puteri [66]

Answer:

Angle and number should be the correct answer

Explanation:

prove me wrong

5 0
3 years ago
Read 2 more answers
If you had 240 L container at 479 k and 300 kpa, what would the volume be if you changed the conditions to STP
nydimaria [60]

Answer:

The answer to your question is V2 = 434.7 l

Explanation:

Data

Volume 1 = V1 = 240 l                             Volume 2 = ?

Temperature 1 = T1 = 479°K                   Temperature 2 = T2 = 293°K

Pressure 1 = P1 = 300 KPa                      Pressure 2 = P2 = 101.325 Kpa

Process

1.- Use the combined gas law to solve this problem

                P1V1/T1 = P2V2/t2

-Solve for V2

               V2 = P1V1T2 / T1P2

2.- Substitution

                V2 = (300)(240)(293) / (479)(101.325)

3.- Simplification

                V2 = 21096000 / 48534.675

4.- Result

                V2 = 434.7 l

6 0
3 years ago
Why is one side of the moon called "the dark side of the moon"?
Lisa [10]

Answer:

Option C

Explanation:

The answer is option C or "The amount of time it takes to rotate around it's axis is the same amount of time it takes to revolve around Earth."Remember that the Earth and the Moons amount of time to make a full rotation is almost in sync and they're two sides of the moon, one side we do not see and that's because that side is currently faced away from the Earth which is called the dark side of the moon. Each side has two weeks oh night, and two weeks of day because of how long it takes the moon to revolve, so while we have a side towards the Earth which is illuminated by the sun we have another pointing away in the dark.

Hope this helps.

4 0
3 years ago
What is the total number of atoms represented in the formula CuSO4*5H2O
Alenkinab [10]
There are 21 atoms represented in the formula :) hope this helped.
4 0
3 years ago
Other questions:
  • Convert the following mass of a compound into moles.<br> 23.5g of NaCl
    14·1 answer
  • Physical signs of stress typically include ________.
    13·1 answer
  • A 200.0 ml quantity of 0.9 M HCl was titrated with an NaOH solution to reach the equivalence point. The goal was to determine th
    12·1 answer
  • A chemist uses hot hydrogen gas to convert chromium(III) oxide to pure chromium. How many grams of hydrogen are needed to conver
    10·1 answer
  • Just help :)))))))))))))))))))))))))))))))))))))))))
    13·1 answer
  • Explain in a short sentence how you can tell a reaction is a decomposition reaction.
    10·1 answer
  • Fe3+ and S2- write the formula for the compound that would be formed
    6·1 answer
  • Ecosystem 8L.3. 1-2 1 1 of 25
    7·1 answer
  • What is the molality of a solution containing 3. 0 moles of nacl and 100. 0 moles of water?
    11·1 answer
  • quizlet a basement is successfully sealed so that more radon may not enter the space, but 5.7×107 radon atoms are already trappe
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!