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dybincka [34]
3 years ago
10

Which element is always found in impure form naturally

Chemistry
2 answers:
harkovskaia [24]3 years ago
8 0
The answer is C. Aluminium since it is highly reactive
S_A_V [24]3 years ago
7 0
C. Aluminium is the answer
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Which mineral leaves a green-black powder when rubbed against an unglazed porcelain plate
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<u>Answer:</u>

Pyrite leaves behind a green-black streak when it is rubbed against an unglazed porcelain plate as a part of the streak test process.

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If 9.6 X 1021 molecules of hydrogen are reacted with excess nitrogen, how many liters of ammonia can be produced at STP?
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<h3>Further explanation</h3>

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\tt \dfrac{9.61\times 10^{21}}{6.02\times 10^{23}}=1.596\times 10^{-2}~moles

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The volume of NH₃ :

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