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2 years ago

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Changes in temperature, pressure, and volume affect the behavior of gases more than they affect solids and liquids. ____________

___
True false question.
True
False

1 answer:

Marina CMI [18]2 years ago

4 0

True. All of those things affect gases more.

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Explain the difference between elements and compounds, a teacher filled

stiv31 [10]

Answer:

Kindly check explanation.

Explanation:

So, without mincing words the solution to this particular Question is given below:

First, an ELEMENT is a that entity that has what is known as the atoms. Although, there might be more elements but the recognized elements are group into the periodic table/chart. Examples of elements are Hydrogen, Helium, Lithium, Beryllium, Boron, carbon, Nitrogen, oxygen, Fluorine, neon, sodium, magnesium, Aluminium and so on.

A COMPOUND consist of different elements that are chemically combined. Examples of compounds are; H2O, CaCO3, H2SO4, HNO3, MgCl2, NaCl, HCl and many more.

Also, elements has the same atoms while componds have different number of atoms since it is a combination of elements.

Finally, ELEMENTS can not be broken down through the use of chemical process while COMPONDS can be broken down through chemical processes.

To the second part of the question. The box that will represent elements will contain balls of the same colors and the balls are not joined together.

6 0

3 years ago

When an excited electron in a hydrogen atom falls from ????=5 to ????=2, a photon of blue light is emitted. If an excited electr

poizon [28]

Answer:

n = 3

Explanation:

Given the formula for the transition energy of an atom with 1 electron:

$E=-13.6*Z^{2}*(\frac{1}{n_{f}^{2}}-\frac{1}{n_{i}^{2}} ) eV$

For the H transition n=5 to n=2:

$E=-13.6*(\frac{1}{4}-\frac{1}{25} ) eV=-2.856 eV$

Then we solve for nf with Z=2 (Helium)

$n_{f}=\sqrt{\frac{n_{i}^{2}*Z^{2}*13.6 eV }{2.856eV*n_{i}^{2}+13.6eV*Z^{2}} }$

$n_{f}=\sqrt{\frac{4^{2}*2^{2}*13.6 eV }{2.856eV*4^{2}+13.6eV*2^{2}} }=3$

Is near 3, actually the energy of the transitions are:

H (5⇒2) = -2.85 eV = 434 nm (Dark blue)

He (4⇒3) = -2.64 eV = 469 nm (Light blue)

I thought it was cool to see the actual colors. Included them.

4 0

3 years ago

What is an example of a physical change involving iron?

tatiyna

Melting iron would be a physical change

Iron rusting would be a chemical change

6 0

3 years ago

Read 2 more answers

PLS HELP NOW I NEED ANSWER WILL GIVE THANKS PLS HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

nadezda [96]

Answer:

The shape of mercury orbit is egg and the second questions is basically Like Venus, Mercury orbits the Sun within Earth's orbit as an inferior planet, and its apparent distance from the Sun as viewed from Earth never exceeds 28°. This proximity to the Sun means the planet can only be seen near the western horizon after sunset or eastern horizon before sunrise, usually in twilight.

Explanation:

i hope this helped?

8 0

3 years ago

Molten lava from a volcano includes pockets of gases. A sample of lava contains 0.75 L of water vapour at 1170°C. What volume wi

Lesechka [4]

Charle's law states the relationship between the temperature and the volume of the gas. The final volume occupied at 120 °C is 0.20 L.

<h3>What is Charle's law?</h3>

Charle's law is the ideal gas law that states the relationship between the volume of the gas occupied at a temperature.

Given,

V1 = 0.75 L

T1 = 1443 .15 K

T2 = 393.15 K

The final volume is calculated as:

(V1 × T2) ÷ T1

= 0.75 × 393.15 ÷ 1443.15

= 0.20 L

Therefore, 0.20 L is the final volume.

Learn more about Charle's law here:

brainly.com/question/14517633

#SPJ1

4 0

2 years ago