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Lerok [7]
2 years ago
13

What is the purpose of molecular models?

Chemistry
1 answer:
dsp732 years ago
6 0

Answer: to see if the matter is a compound, mixture, or element.

Explanation:

can you please help with my most recent question :)

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Ar (g) is placed in a 3.80 L container at 320 K. The gas pressure is 0.496 atm.
nata0808 [166]

Answer:

PV=nRt

Therefore n(number of moles)=PV/RT

=>(0.49×3.80)/(0.08206×320)

Therefore Number of moles is = 0.071mols

Explanation: By using the Real gas equation..

PV=NRT .

We can solve for the number of moles of Ar by making N the subject..

Always make sure you pressure is In atm, your Volume is in Litres and temperature in degree Kelvin.

Also Recall the universal gas constant R used in this type of questions which is 0.08206.

Hence l, by making N the subject we get our answer as

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3 years ago
Explain the difference between rotation and revolution.
aleksandrvk [35]

Answer:

Rotation: spins on its axis

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The Earth rotates on its axis, while it revolves around the sun.

The moon revolves around the Earth.

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An element is?
Sidana [21]

i think it’s D , not sure though

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Hydrogen ion reacts with zinc to produce_____ gas?
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Hydrogen ion reacts with zinc to produce\:\pmb{\underline{\red{\sf{Zinc \:hydride    }}}}\:gas

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