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Alex
3 years ago
7

The man who developed the concept that light is emitted and absorbed in bundles or packets was:

Chemistry
2 answers:
Mnenie [13.5K]3 years ago
4 0

Answer:

Planck

Explanation:

Light is emitted and absorbed as energy packets. Photons are quantized. According to Planck’s equation, E = hν, where E is the energy of the photon, h is Planck’s constant and v is the frequency of light. Therefore the energy of the quantum of light is directly proportional to the frequency of light.

ludmilkaskok [199]3 years ago
3 0
Planck suggested that light/energy was absorbed/released in certain amounts, called quanta.
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What is the volume in liters of 5.25 moles of He gas?​
serious [3.7K]

Answer:

\boxed {\boxed {\sf 117.6 \ L \ He}}

Explanation:

Regardless of the type of gas, 1 mole at standard temperature and pressure (STP) occupies a volume of 22.4 liters. In this case the gas is helium (He).

We can set up a ratio.

\frac { 22.4 \ L \ He}{ 1 \ mol \ He}

Multiply by the given number of moles.

5.25 \ mol \ He *\frac { 22.4 \ L \ He}{ 1 \ mol \ He}

The moles of helium will cancel.

5.25 *\frac { 22.4 \ L \ He}{ 1 }

5.25 * { 22.4 \ L \ He}

Multiply.

117.6 \ L \ He

5.25 moles of helium gas at STP is 117.6 liters of helium.

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Calculate the mass of 3 moles of CCI4
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Answer:

So one mole of ccl4 contains 152 grams. it implies that 3 moles of ccl4 contains 152 * 3 grams. it is equal to 456. grams.

Explanation:

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3 years ago
Which element is in Group 2 and Period 7 of the Periodic Table?
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Answer:

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