CHEMISTRY HIGH SCHOOL

Electrons are capable of emitting energy in the form of light at very narrow ranges of wavelengths. These wavelengths can be measured to find the electron's a. mass.
b. density.
c. energy level.
d. specific heat.

Answers

Answer 1

Answer:

The correct answer is (C) energy level.

The explanation:

When the electrons release photons , and those photons are at different levels

of energy . So we can define the electron's energy level from this photons which

tell us the energy level they are on.

Answer 2

Answer: C. Electrons release photons at different energy levels which would tell us which level they are on.

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Which subatomic particles orbit the nucleus

Answers

the answer is electrons

Electrons are that sub-atomic particles

as electrons are passed through the system of electron carriers associated with photosystem ii, they lose energy. what happens to this energy?

Answers

they break up and become only positive energy

How does adding a non-volatile solute to a pure solvent affect the boiling point of the pure solvent?The solvent will have a lower boiling point.

The solvent will have a higher boiling point.

The solvent's boiling point will not be affected.

The solvent's boiling point will most likely change, but not in a predictable way.

Answers

The correct answer is the second statement. The solvent will have a higher boiling point. Adding a non-volatile solute to a pure solvent will increase the boiling point of the solvent. This solution exhibit colligative properties. Colligative properties depend on the amount of solute dissolved in a solvent. These set of properties do not depend on the type of species present.

Given the equation: 2Na + 2H2O → 2NaOH + H2 Which substance in this equation is a binary compound?

Answers

Answer: In the following equation, $H_2O$ is considered as a binary compound.

Explanation: A binary compound is considered as a compound having 2 elements only. In the following chemical equation:

$2Na+2H_2O\rightarrow 2NaOH+H_2$

There are 2 compounds present because compound is defined as the chemical combination of two or more elements in a fixed ratio.

In the equation, compounds are: $H_2O$ and $NaOH$

$H_2O$ consists of 2 elements which are hydrogen and oxygen and hence is considered as a binary compound.

$NaOH$ consists of 3 elements which are sodium, hydrogen and oxygen and hence, cannot be considered as a binary compound.

In which block of the periodic table is chromium (Cr) found?

Answers

The correct answer for above statement:

chromium is in group 6 d-block

Explanation:

The d-block elements are designated transition metals and have valence electrons in d orbital's. The f-block elements, observed in the two rows at the ground of the periodic table, are called inner transition metals and have valence electrons in the f-orbital's.

Chromium is a synthetic element with symbol Cr and atomic number 24. It is the first component in group 6. It is a steely-gray, glistening, dense and brittle metal which takes a high polish, resists smudging, and has a great melting point.

chromium is in group 6 d-block

At atom that has only one electron in its valence electron shell is ________ chemically reactive.a. not
b. mildly
c. highly
d. The name of the element is needed to figure this out.

Answers

The correct answer is C. An atom having only one valence electron is highly chemically reactive. The valence electron says a lot to the reactivity of an atom. For example, sodium has only one valence electron which makes it so reactive and unstable. The alkali metals have only 1 valence electron.

Answer:The correct answer is C. Highly

Explanation:

its correct because I got it correct on my test sooo..yuup.!

-hope this helps.!!

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