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
marissa [1.9K]
2 years ago
14

I need help on this question?

Chemistry
2 answers:
ASHA 777 [7]2 years ago
8 0
I believe it is D, as things are passing through
rjkz [21]2 years ago
3 0
I think it’s D also I’m possitive
You might be interested in
An electromagnetic wave that has a lower frequency than infrared radiation will have ____ than the infrared radiation. longer wa
Monica [59]
Answer: longer wavelength and lower energy.

Explanation:

1) The wavelength is inversely related to the frequency. So, an electromagnetic wave with lower frequency will have longer wavelength.

This is the formula for electromagnetic waves:

λ = c / ν

where λ is the wavelength, c is the speed of light, and ν is the frequency.

2) Energy is directly related to the frequency.

This is the formula E = hν,

where E is the energy, h is Planck constant, and ν is the frequency.

So, the lower the frequency the lower the energy.

3) Conclusion:
<span>An electromagnetic wave that has a lower frequency than infrared radiation will have longer wavelength and lower energy than the infrared radiation</span>
6 0
3 years ago
Calculate the moles of Cu in 7.4×1021 atoms of Cu.
IceJOKER [234]
1 moles -------- 6.02x10²³ atoms
 ?? moles ----- 7.4x10²¹ atoms

moles = 7.4x10²¹ / 6.02x10²³

 = 0.01229 moles

hope this helps!
5 0
4 years ago
17.42 mL of 0.1M NaOH was needed to reach the endpoint in the titration. How many moles of NaOH are in 17.42 mL of 0.1M NaOH
Varvara68 [4.7K]

Answer:

0.001742moles

Explanation:

1000ml of NaOH contain 0.1moles

17.42ml of NaOH contain (0.1*17.42)/1000 moles

= 0.001742moles

8 0
2 years ago
Which term best indicates the average mass of an atom of an element?
Firdavs [7]
The answer is the atomic mass.
8 0
3 years ago
Read 2 more answers
If anyone can get this question, 20 points for you!
torisob [31]

Answer:

Light

Explanation:

The discovery of light from the other side of a black hole was predicted by Einstein's theory of general relativity. ... The research began with a slightly different aim of a more common light formed by a black hole: the corona which wraps around the outside of it, formed as material falls in.

6 0
2 years ago
Other questions:
  • When 4.979 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 16.20 grams of CO2 and 4.976 grams of H
    5·1 answer
  • Do all alloys contain only two metals?
    5·1 answer
  • In the Fe/Cu Lab for every 1 mole of Fe reacted, 1 mole of Cu is made, therefor, for every 1 gram of Fe used, 1 gram of Cu is ma
    7·1 answer
  • If 621000 Joules of energy are added to 3.30 Liters of water at 286 Kelvin what will the final temperature of the water be? Temp
    5·1 answer
  • A match burns because of what type(s) of properties?
    13·2 answers
  • Please help it’s due by midnight I’ll mark you brainiest if you’re able to help
    14·1 answer
  • F(x) = x3 + ax2 + bx + c
    5·1 answer
  • How much heat is needed to raise a 0.30 g piece of aluminum from 30.C to 150C? The specific heat of aluminum 0.900j/gC
    14·1 answer
  • State three advantages of rusting<br><br><br>​
    11·1 answer
  • Which mineral reacts readily with cool, dilute hydrochloric acid to produce visible bubbles of carbon dioxide gas?.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!