radiation in the ultraviolet region of the electromagnetic spectrum is quite energetic. it is this radiation that causes dyes to fade and your skin to develop a sunburn. if you are bombarded with 1.00 mol of photons with a wavelength of 370. nm, what amount of energy, in kilojoules per mole of photons, are you being subjected to?

Answers

Answer 1
Answer:

If you are bombarded with 1.00 mol of photons with a wavelength of 370 nm, you are being subjected to 322 kJ/mol of energy.

The energy of a photon is given by the equation:

E = hc/λ

where:

h = Planck's constant = 6.626 x 10^{-34 J s

c = speed of light = 2.998 x 10^8 m/s

λ = wavelength of the radiation

To find the energy of a mole of photons, we need to multiply the energy of a single photon by Avogadro's number (6.022 x 10^{23).

First, we need to convert the wavelength of the radiation from nanometers to meters:

370 nm = 370 x 10^{-9 m

Now, we can use the equation to calculate the energy of a single photon:

E = hc/λ

E = (6.626 x 10^{-34 J s) x (2.998 x 10^8 m/s) / (370 x 10^{-9 m)

E = 5.35 x 10^{-19J

Next, we can calculate the energy of a mole of photons:

(5.35 x 10^{-19 J/photon) x (6.022 x 10^{23 photons/mol) = 3.22 x 10^5J/mol

Finally, we can convert the energy to kilojoules per mole of photons:

3.22 x 10^5 J/mol = 322 kJ/mol

To know more about wavelength refer here

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When in orbit, a satellite such as the space shuttle isa. simply a projectile.
b. in non-accelerated motion.
c. free from Earth's gravity.

Answers

Answer: B

Explanation:

When in orbit, a satellite is hold in position thanks to, between others, the earth's gravity. So the C option is discarded.

A projectile is an object thrown by the exertion of some force, like a bullet or a cannonball.

A satellite is placed in some orbit, so he can rotate the earth. The movement of the satellite is non-accelerated motion, because the only forces that act on the satellite are the forces that hold him in orbit.

Final answer:

When in orbit, a satellite such as the space shuttle is in non-accelerated motion and is influenced by Earth's gravity.

Explanation:

When in orbit, a satellite such as the space shuttle is in non-accelerated motion.

It is not simply a projectile because it is continuously under the influence of Earth's gravity.

However, it is not completely free from Earth's gravity as it continues to be pulled towards the Earth.

Learn more about Satellite motion here:

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A chlorine ion contains 17 protons, 18 neutrons, and 18 electrons. What is the net charge of the ion? A. -e B. 0 C. +e D. -18e

Answers

A chlorine ion contains 17 protons and 18 electrons, which gives it a net charge of -1 1234. Therefore, the correct answer is A. -e.

What kind of relationship between the independent and dependent variable does this graph illustrate? A. inverse proportion
B. linear
C. quadratic
D. direct proportion

Answers

Answer:

C. quadratic

Explanation:

Linear graphs are straight lines, and direct proportion graphs are lines that pass through the origin.

Inverse proportion graphs have vertical and horizontal asymptotes passing through the origin.

Quadratic graphs are parabolas.

The graph shown is a parabola, or quadratic.

a motorcycle accelerates from 15 m/s to 20 m/s over a distance of 50 meters. what is its average acceleration?

Answers

For this, you need the v-squared equation, which is v(final)² = v(initial)² + 2aΔxThe averate acceleration is thus a = (v(final)² - v(initial)²) / 2Δx = (20² - 15²) / 2(50) = 175 / 100 = 1.75 m/s²So the average acceleration is 1.75 m/s²

Money is useful to people because it is __________.Select one of the options below as your answer:a. a medium of exchange
b. prestigious
c. nice to look at
d. something that makes you feel good

Answers

a. A medium of exchange ....Hope am right !!!
The answer is A because money is a form of barter in a sense.

According to Kepler's law of harmonies, which of these planets takes the longest to orbit the Sun?

Answers

The planet in the orbit with the largest major axis takes the longest
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I'm sorry I can't be any more specific, but you didn't list any planets
to choose from.

Answer:

Explanation:

The planet in the orbit with the largest major axis takes the longest

to complete one orbital revolution.