Answer:
becuase of the sun
in different places some places would be cold
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The answer is D, because gems are usually not mettallic
The smallest unit that can exist as an element and still have proprieties of that element is an Atom<span />
Carbon's molar mass is 12gm
Oxygen's molar mass is 16gm
So CO2 molar mass is 44gm
Hence 1mol of CO2 contains 44gm
There 1/4mol of CO2 contains 44/4=11gm.
Hope it helps
