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mojhsa [17]
3 years ago
10

Which sample is a pure substance

Chemistry
1 answer:
Arte-miy333 [17]3 years ago
4 0

Answer: container of zinc and oxygen

Hope this helps!

Explanation: edgenuity

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Option A

They are located near the equator

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From the diagram, we can observe that all the rain forest zones occur near the equator.

This is because on an annual basis, the equator receives the highest concentration of solar radiation in the whole Earth. This implies that the rate of evaporation of water from the water bodies present  is high, and consequently, the amount of rainfall is high also. This abundant sunshine and high rainfall  leads to the growth of the tropical rain forests at those regions

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What are the primary atoms that make up the scents that we smell?
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What is the initial temperature (°C) of a system that has the pressure decreased by 10 times while the volume increased by 5 tim
horrorfan [7]

Answer:

27°C or 300K

Explanation

We were told that the pressureof the system decreased by 10 times implies that P2= P1/10

Where P2=final pressure

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Wew were also told that the volume of the system increased by 5 times this implies that V2= 5×V1

Where T2= final temperature =-123C= 273+(-123C)=150K

T1= initial temperature

But from gas law

PV=nRT

As n and R are constant

P1V1/T1 = P2V2/T2

T1= P1V1T2/P2V2

T1=2×T2

T1=2×150

T1=300K

=300-273

=27°C

the initial temperature (°C) of a system is 27°C

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