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BartSMP [9]
3 years ago
5

This diagram shows the shift in the spectrum for hydrogen light from several different sources in the universe compared to a lab

oratory reference. What is the best argument you can make from this data?
A) More distant galaxies are hotter than nearby stars
B) More distant galaxies are moving toward us faster than a nearby star
C) More distant galaxies are moving at the same rate as nearby stars
D) More distant galaxies are moving away faster than nearby stars
Chemistry
2 answers:
Artyom0805 [142]3 years ago
8 0

Answer:

Many stars and distant galaxies move at varying speeds compared to each other.

Explanation:

All statements are contradictory, so play it safe and declare different energy levels.

mihalych1998 [28]3 years ago
8 0

Answer:

I think the answer is A) More distant galaxies are hotter than nearby stars

Explanation:

Hope this helps :)

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What minimum energy is required to excite a vibration in HF?
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Answer:

The energy of a vibrating molecule is quantized much like the energy of an electron in the hydrogen atom. The energy levels of a vibrating molecule are given by the equation: En=(n+21)hv where n is a quantum number with possible values of 1, 2, ... and v is the frequency of vibration.

Explanation:

hope it helps.

have a wonderful day!

7 0
3 years ago
If you observe a Full Moon on January 12th, on what date would you observe the next New Moon?
AlexFokin [52]

January 19

Explanation:

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8 0
3 years ago
What is the acceleration of an object that goes from 3 m/s to 5 m/s in 8 s?
nikdorinn [45]

Answer: 0.25m/s2

Explanation:

Acceleration is change in velocity with time

V = final velocity = 5m/s

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a = Acceleration =?

a = V — U / t

a = (5 — 3) / 8

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8 0
3 years ago
Read 2 more answers
Which statement is correct regarding the rate of the reaction below? 3A + B 4X + 2Y The rate of disappearance of B is three time
V125BC [204]
First, let's write the givens in the form of a chemical equation:
3A + B ...................> 4X + 2Y

Now we find that this equation implies the following:
For every 4X and 2Y formation, 3A and 1B must disappear (react).

Comparing this implication to the above choices,  we find that the right answer is: <span>The rate of formation of X is four times the rate of disappearance of B.</span>
7 0
3 years ago
After observing (you can repeat the process more than once), write a general statement explaining how reducing the volume change
ad-work [718]

Answer:

The correct answer is that both molecular motion, pressure and temperature increase as volume reduces.

Explanation:

A reduction in volume changes the molecular motion, temperature and pressure of the system. When the volume of the container decreases, this causes the pressure to increase, the temperature to increase and the molecular motion to increase. This is because a liquid and a solid are incompressible, so by reducing the volume of a gas, the molecules increase their movement as the temperature of the system increases, which is due to the increased pressure applied to reduce the volume of the system.

Have a nice day!

4 0
3 years ago
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