Pls help me I don’t understand it’s for my science class.

Plz check if correct and tell me wether each is element or compound

Answer:

The chemical formula for hydrogen peroxide is H₂O₂. The total number of atoms in 1 molecule of hydrogen peroxide is four atoms. Two atoms of hydrogen and two atoms of oxygen.

Chemically, hydrogen peroxide has the formula H₂O₂. It is a somewhat more viscous liquid than water, and very pale blue when it is pure. For consumer use, it is typically diluted in water and used as an oxidant, bleaching agent, and antiseptic. For industrial use, larger concentrations are utilized.

Hair bleaching, surface cleaning, and tool disinfection are all done using hydrogen peroxide. It is also utilized in gardening and dental hygiene.

Two hydrogen and two oxygen atoms make up one molecule of H₂O₂. Therefore, two molecules of H2O2 contain four hydrogen and four oxygen atoms each. Two hydrogen atoms and one oxygen atom make up a water molecule.

Thus,  The total number of atoms in 1 molecule of hydrogen peroxide is four atoms.

To learn more about hydrogen peroxide, follow the link;

https://brainly.com/question/12058172

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Answer:

biraz naruto izle

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Answer:

This is by diffusion.

Explanation:

The slideshow describes what happens. Diffusion in liquids is slower than diffusion in gases because the particles in a liquid move more slowly. It happens faster if the temperature is increased

Answer:

a. 0.33 g/mL

Explanation:

We already know what the mass is (9 grams) so we have to find the volume of the cube next.

Volume = lwh

             =(3)(3(3)

             = 27

To find density, you have to find mass/volume

density = mass /volume

density = 9 g /27 mL             (cm 3 and mL are basically the same thing)

            = 0.33 g/mL

Answer:

sureeee

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Answer:

The substances in both test tubes are reactive only at high temperatures.

Explanation:

Bubbling occurs in test tube 2, which is a sign of a chemical change. Hope this helps.

Answer:

C)The substances in both test tubes are reactive only at high temperatures.

Explanation:

I did the test.

Answer:

All kinds of waves have the same fundamental properties of reflection, refraction, diffraction and interference, and all waves have a wavelength, frequency, speed and amplitude.

Answer:

Particles can only react when they collide. If you heat a substance, the particles move faster and so collide more frequently. That will speed up the rate of reaction. ... The rate of reaction will probably have doubled for that increase in temperature - in other words, an increase of about 100%.

HOPES IT HELPS

Ans: Elements in the same period have the same number of electron shells.

Answer:

1.weathering is the action were a rock starts breaking off or worn out erosion is by natural causes like wind.

2. weathering if your every near a cliff or a mountain you might see rocks falling of

erosion would be if you ever come by a rock a plant my grow inside of it and start breaking

Explanation:

i might have gotten #2 mixed up with weathering and erosion but you could see more answers

Answer: what? whats the quiestion?

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Answer: kinetic energy relies on motion, while potential energy is stored energy.

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Answer:

something that is produced by an agency or cause; result; consequence: Exposure to the sun had the effect of toughening his skin. power to produce results; efficacy; force; influence: His protest had no effect.

Refraction is the change in direction of propagation of a wave when the wave passes from one medium into another, and changes its speed. Light waves are refracted when crossing the boundary from one transparent medium into another because the speed of light is different in different media.

Explanation:

hope the answer was helpful...

Answer:

Explanation:

Your answer should be in the attached pdf

Answer:Instead of “theory” scientists use the word hypothesis to describe a possible explanation for a scientific mystery. Theories in science are hypotheses that.

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Answer:

As a wave moves into shallow water, its orbitals “feel the bottom,” causing it to slow down.  you will see a sea of red tail lights in front of you: the cars in front of you are all  Why does the wavelength of waves change as they approach a beach direction, so at any given spot in the ocean, waves are typically coming from

Explanation:

I hope I help :)

Answer:

Rapid deforestation can led to a drastic increase in pollution and the amount of co2 in the air. To reduce the effects, try planting more trees or just pollute less.

Explanation:

Rapid deforestation can led to a drastic increase in pollution and the amount of co2 in the air. To reduce the effects, try planting more trees or just pollute less.

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Answer:

FIRST ONE

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Answer:

There ya gooo.

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Answer:

Explanation:

How am I supposed to draw something in text? Oh, I know! _/\_/\_/\_/\_/\_/\_

Answer:

The Answer is A

Explanation:

Please let me know if I am wrong

Answer:

B

Explanation:

got it right on edge

Answer:

Its A porosity

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Answer:

Puerto rico and Cabezon Peak

Explanation:

sixty percent of all active volcanoes occur at the boundaries between tectonic plates. Most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean. Some volcanoes, like those that form the Hawaiian Islands, occur in the interior of plates at areas called “hot spots.”

Hope this helped!

Answer: you need to specificlly write down what you did for your lab report and do what all of thet stuff says to do

Explanation:

Answer:

So I went threw the student guide and read it carefully. Then I went threw the walk threw with the teacher and the step by step guide to get the lab done. when did multiple test an example is the height of the track and we did multiple times on that height to see it the results where same or had little difference.  As I went threw it I recorded the data because I was asked to. then i filled out the questions for the lab!

Explanation:

just did it hope it helps future people

Answer:

Circuit breaker.

Explanation:

the wave bounces back off the first media and returns to it origanal resting place

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