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Degger [83]
3 years ago
10

Which graph above shows an object’s acceleration?

Chemistry
2 answers:
My name is Ann [436]3 years ago
7 0

Answer:

A i just did it. And yes i do go to k12

Explanation:

JulijaS [17]3 years ago
6 0
I do believe it’s a. I don’t know why
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Which of the following is the most violent of all solar disturbances?
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Answer: d) solar flares. is the nos violent of all solar disturbances.
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3 years ago
What is the difference between the spectrum of hydrogen and the spectrum of sunlight
g100num [7]

Answer:

The hydrogen spectrum is an important piece of evidence to show the quantized electronic structure of an atom. ... It results in the emission of electromagnetic radiation initiated by the energetically excited hydrogen atoms. The hydrogen emission spectrum comprises radiation of discrete frequencies.

The spectrum starts with red light, with a wavelength of 700 nanometers (7,000 angstroms), at the top. ... It spans the range of visible light colours, including orange and yellow and green, and ends at the bottom with blue and violet colours with a wavelength of 400 nm (4,000 angstroms).

Explanation:

Hydrogen molecules are first broken up into hydrogen atoms (hence the atomic hydrogen emission spectrum) and electrons are then promoted into higher energy levels. Suppose a particular electron is excited into the third energy level. It would tend to lose energy again by falling back down to a lower level.

The spectrum of the Sun appears as a continuous spectrum and is frequently represented as shown below. This type of spectrum is called an emission spectrum because what you are seeing is the direct radiation emitted by the source.

6 0
3 years ago
Water absorbs energy when it undergoes___
k0ka [10]
Water absorbs energy D. Melting
5 0
3 years ago
Read 2 more answers
For the oxidation of glucose (C6H12O6 + 6O2 --> 6H20 + 6CO2), how many grams of oxygen gas will be consumed when 950g of gluc
Crazy boy [7]
You need to find the mole of glucose by using the formula n = m/Mr. Once you have found the mole you need to follow the stoichiometric process by unknown/known using the co-efficients. Then you need to multiple your answer by the known mole of glucose whoch you have previously calculated. After that you should get the mole of oxygen then you just need to transpose the equation to get m = n×Mr, substitute ypur answers in, remebering you can find your Mr via the period table, you have your answer
4 0
4 years ago
Read 2 more answers
(b) Why is the heat of sublimation ( ΔH fus ) of a substance greater than its ( ΔHvap ) ?
Ivanshal [37]

This is because solids have less energy than liquids do, hence it takes more energy to excite a solid into its gaseous phase than it does a liquid.

When opposed to merely reducing their separation, from solid to liquid, the energy needed to totally separate the molecules as they move from liquid to gas is substantially higher. The latent heat of vaporization is therefore bigger than the latent heat of fusion for this reason.

<h3>What is heat of sublimation?</h3>

The amount of energy required to change one mole of a substance from its solid to its gaseous state under particular conditions—typically the standard ones—is known as the enthalpy of sublimation or heat of sublimation (STP). A solid's worth is based on its cohesive energy.

<h3>What is heat of vaporization?</h3>

The term "enthalpy of vaporization," which is often referred to as "heat of vaporization" or "heat of evaporation," refers to the amount of energy that must be applied to a liquid substance in order to cause a part of that substance to transform into a gas. Vaporization's enthalpy varies with the pressure at which the transition takes place.

Learn more about heat of sublimation: brainly.com/question/13200793

#SPJ4

The correct question is:

Why heat of the sublimation of a substance is greater than the heat of vaporization?

7 0
2 years ago
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