CHEMISTRY HIGH SCHOOL

According to the Bohr model of the atom, energy is emitted as light when electronsO fall back down to a lower energy level
O jump up to a higher energy level
are absorbed into the nucleus
O are ejected from the nucleus

Answers

Answer 1
Answer:

Answer:

After jumping to the higher energy level also called the excited state the excited electron would be in a less stable position, so it would quickly emit a photon to relax back to a lower, more stable energy level.

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Which equation represents the total ionic equation for the reaction of HNO3 and NaOH?

Describe cycling or movement of water throughout earths spheres. Explain why the process is considered a cycle. Write a complete paragraph (five complete sentences minimum) in order to receive full credit for this activity

Answers

Answer:

This process is considered as a cycle because it continues and dosent stops. This process includes the evaporation of watet from earth surface due to heat.this water is converted in to water vapours. After reaching clouds it condences back. When the clouds become heavy with watef it falls back on earth as rain.and the process repeats.

Explanation:

A medium-temperature star like the Sun would most likely emit its most intense radiation as _____. A. Ultraviolet light B. Visible light C. Microwaves D. Radio waves

Answers

Answer:

The correct answer is option B, that is, visible light.

Explanation:

The Sun is a prime source of ultraviolet rays. Although the Sun discharges all of the distinct types of electromagnetic radiation, 99 percent of its rays are in the form of ultraviolet rays, visible light, and infrared rays. The Sun emits radiation all through the electromagnetic spectrum, that is, from extremely high-energy X-rays to ultra-lengthy wavelength radio waves, and everything that comes in between. However, the peak of the emission takes place in the visible part of the spectrum.

Which it's which pls help me

Answers

P: Good conductor of heat and electricity - R: the delocalized electrons are
free to move around the structure

P: High melting and boiling points - R: the bonds in metals are very strong

P: Ductile (can be stretched and squashed) - R: because the electrons are free to move, the atoms can slide over each other.

P: Malleable (can be hammered into shape) - R: the bonds in metal don't break easily

Fter a radioactive atom decays, it is the same element that it was before with no measurable change in mass. Which kind of decay has occurred, and how do you know?

Answers

After a radioactive atom decays, it is the same element that it was before with no measurable change in mass. the decay that is present is gamma decay because gamma decay has photons which has no mass unlike alpha and beta decay.

Answer:

D

Explanation:

on edge 2020

What is the name of a neutral group of atoms that are held together by covalent bond (this word has 8 letters)

Answers

The word that you're looking for is either nonpolar or molecule. Both have 8 letters. A molecule is a group of atoms held together by covalent bonds, and nonpolar is used to describe a molecule in which the electrons are shared equally between the atoms. 

The compounds KNO3 and NaNO3 are soluble in water.55 Compare the entropy of 30. grams of solid KNO3 at 20.°C with the entropy of 30. grams of KNO3 dissolved in 100. grams of water at 20.°C. [1]


56 Explain why the total thermal energy of a sample containing 22.2 grams of NaNO3 dissolved in 200. grams of water at 20.°C is greater than the total thermal energy of a sample containing 11.1 grams of NaNO3 dissolved in 100. grams of water at 20.°C. [1]


57 Compare the boiling point of a NaNO3 solution at standard pressure to the boiling point of water at standard pressure. [1]

Answers

55) Answer==>   the solid has less entropy
56) Answer==> 22.2g produces more heat than 11.1g when dissolved
57) Answer==> the solution has a higher boiling point
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