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Ket [755]
3 years ago
11

Which of the following is compound?

Chemistry
2 answers:
n200080 [17]3 years ago
7 0
B. NaCl

Explanation: NaCl is made up of sodium and chloride (two different elements makes up a compound)
asambeis [7]3 years ago
4 0

Answer:

fire

Explanation:

Fire is made up of many different substances, so it is not an element. ... Flames are the result of a chemical reaction, primarily between oxygen in the air and a fuel, such as wood or propane. In addition to other products, the reaction produces carbon dioxide, steam, light, and heat

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Answer:

The answer is "The First choice".

Explanation:

The whole question can be found in the file attached.

The water vapor inside the air freezes thru the entrance of its nitrogen. This is because liquid nitrogen has a very low temperature and seems to be sufficiently cold to condensed and freeze the steam of water. At air pressure, it has a boiling temperature of -196°C. Freezing the skin producing freeze or cold burns can be associated with direct contact.

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3 years ago
One isotope of Br has a half-life of 16.5 hours. How much of a 2.00 gram sample remains at the end of 1.00 day?
valina [46]

Answer:

half life=16.5hrs

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total time=1day=24hrs

no. of half lives=total time/half life

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sample left=1/2n=1/2[1.5]=0.707gapprox

Explanation:

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5 0
3 years ago
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Why is east Texas shaded green and west Texas shaded brown
kodGreya [7K]
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