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zloy xaker [14]
3 years ago
11

During an observation, it was noticed that light travels as bundles containing certain amounts of energy. What does this evidenc

e reveal about light?
A. It travels at a finite speed.


B. It demonstrates a behavior of particles.


C. It travels through the vacuum of space.


D. It demonstrates a behavior of forces.
Physics
1 answer:
blsea [12.9K]3 years ago
6 0

Answer: B. It demonstrates a behavior or particles.

Explanation: I took the test and got it right

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Answer:

Option (B) is correct.

Explanation:

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2H_2 +O_2 \rightarrow 2H_2O

From the given, the only fact that can be observed that 2 moles of H_2 and 1 mole of O_2 reacts to produce 2 moles of H_2O.

As the mass of 1 mole of H_2 = 2 grams ... (i)

The mass of 1 mole of O_2 = 32 grams ...(ii)

The mass of 1 mole of H_2O = 18 grams (iii)

Now, the mass of the reactant = Mass of 2 moles of H_2 + mass 1 mole of  O_2

= 2 \times 2 + 32  [ using equations (i) and (ii)]

=4+32 = 36 grams.

Mass of the product = Mass of 2 moles of H_2O

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=36 grams

As the mass of reactants = mass of the product.

So, mass is conserved.

Hence, option (B) is correct.

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If a car changes its velocity from 32km/hr in 8.0 seconds what is its acceleration
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This ball is technology too! It can be<br> rolled, kicked, or thrown. Is that a need<br> or a want?
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