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likoan [24]
3 years ago
11

Which contains the most moles: 10 g of hydrogen gas, 100 g of carbon, or 50 g of lead?

Physics
1 answer:
Stolb23 [73]3 years ago
5 0

Answer:

Carbon

Explanation:

We know that

Number of moles = mass/molecular mass

So

Hydrogen: given as H2 with 10g an atomic number of 1 so MW( 1x 2= 2)

Number of moles = Weight/MW

= 10/2

= 5

Carbon: atomic number 12 C and mass 100

Number of moles = Weight/MW

= 100/12

= 8.33

Lead: atomic num 207 and mW 207 pb

Number of moles = Weight/MW

= 50/207

= 0.241

Therefore Carbon has the most moles.

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Answer: 0.43\ rad/s

Explanation:

Given

Mass of child m=34\ kg

speed of child is v=2.8\ m/s

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radius r=2.31\ m

Conserving the angular momentum

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3 years ago
The photons of different light waves:
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Answer:

(C)

Explanation:

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Answer:

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Hello this is to other people looking for the answer. Everyone else is wrong. I just took the quiz on e2020. The answer actually Comparative. Your welcome. Have a nice day.

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example:  A person is applying a force on rigid wall but wall remains at rest there is no displacement occurs in wall.

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