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diamong [38]
3 years ago
9

Which is a compound?

Chemistry
1 answer:
Dmitry [639]3 years ago
4 0
(A.) Nickel and oxygen reacting chemically could create a compound. (Most likely some sort of oxide)

The pure silver is only made up of one element, so it can't be a compound.

The sandwich and all it's components may contain chemical compounds, but is not a compound in itself.

While it is possible that the material the nails are made out of is a compound, we are not given this information. Simply stating that nails (no matter the size) are in a box, does not make it a compound.
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Which two layers are part of the thermosphere?
borishaifa [10]

Answer:

exosphere and ionosphere.

Explanation:

very high up,the earth's atmosphere becomes very thin. the region where atoms and moleculesescape into space is referred to as the exosphere. exosphere is on top of the thermosphere.

scientists what is called the ionospherean extension of the thermosphere. so technically, ionosphere is not another atmospheric layer.

6 0
3 years ago
Read 2 more answers
How much faster does helium escape through a porous container than ozone?
otez555 [7]
According to Graham's Law ," the rates of effusion or diffusion of two gases are inversely proportional to the square root of their molecular masses at given pressure and temperature".

                                r₁ / r₂  =  \sqrt{M2 / M1}   ---- (1)

r₁    =  Rate of effusion of He

r₂    =  Rate of Effusion of O₃

M₁  =  Molecular Mass of He  =  4 g/mol

M₂  =  Molecular Mass of O₃  =  48 g/mol

Putting values in eq. 1,

                                r₁ / r₂  =  \sqrt{48 / 4}

                                r₁ / r₂  =  \sqrt{12}

                                r₁ / r₂  =  3.46

Result:
          Therefore, Helium will effuse 3.46 times more faster than Ozone.
4 0
3 years ago
When Al(NO3)3 is separated into its ions, how is it written?
nikklg [1K]
Al (+3)
NO3 (-1)
So basically you need 3 NO3 and one Al to produce Al (NO3)3
3 0
3 years ago
Read 2 more answers
1-chloro-4-methyl-2-pentene undergoes hydrolysis in warm water to give a mixture of 4-methyl-2-penten-1-ol and 4-methyl-1-penten
agasfer [191]

Answer:

Explanation:

attached here is the diagram representing the structure

4 0
3 years ago
Net Ionic Equation of potassium phosphate (aq) + barium chloride (aq) --> ?
ivolga24 [154]
The answer would be B since it forms a solid
4 0
3 years ago
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