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Andru [333]
4 years ago
9

What is the number of moles in 500L of He

Chemistry
2 answers:
ella [17]4 years ago
5 0

I think the answer is  20 moles


Volgvan4 years ago
4 0

Answer:

20 moles

Explanation:

The important thing to realize here is that you're working under STP conditions, which implies that you can use the molar volume of a gas at STP to find how many moles of helium will occupy that volume.

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Rank the gases in the atmosphere in order from most to least abundant.
Advocard [28]
Nitrogen
Oxygen
Water Vapor
Carbon Dioxide
Methane
Nitrous Oxide
Ozone
Everything else - 3-billion-way tie :)
7 0
3 years ago
Carbon-12, Carbon-13 and Carbon-14 are examples of _______________ of the carbon atom.
Assoli18 [71]

Carbon-12, Carbon-13 and Carbon-14 are examples of isotopes of the carbon atom.


6 0
3 years ago
Read 2 more answers
Anyone who is good at chemistry can you please help me with this? It’s only two problems and I need help. :(
nordsb [41]

Here's link to the answer:

tinyurl.com/wpazsebu

4 0
3 years ago
Which of the following terms describes the motion of particles during the transmission of wave energy? A. non-recurrent B. arbit
Vlad [161]
The term that describes the motion of particles during the transmission of wave energy would be C. periodic.
Hope this helps!
5 0
4 years ago
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The lengthening of a transmitted signal's wavelength and/or a decrease in its frequency, which indicates that the object is movi
Alla [95]

B

Relative to the observer, the objected, emitting visible light will appear red in color because the wavelength of light is stretched hence acquiring longer wavelength in the visible electromagnetic spectrum (remember red light has the longest wavelength in the visible light spectrum).

Explanation:

Conversely, if the object was moving towards the observer, it would appear blue in color (blue shift) because the relative wavelength of the visible light would be ‘compressed’ (remember this is always relative to the observer) hence the wavelength would be shorter (and blue light has the shortest wavelength in the visible light spectrum).

Both these phenomenons are classified under Doppler shift effect of waves. It also occurs in our daily lives. When a wailing ambulance approaches you, the pitch of the wailing sounds is higher (relative to you). However, when the ambulance passes you and begins stretching away from you, the pitch of the wailing goes low.

Learn More:

For more on Doppler shift effect check out;

brainly.com/question/3841958

#LearnWithBrainly

4 0
3 years ago
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