CHEMISTRY HIGH SCHOOL

A specific amount of energy is emitted when excited electrons in an atom in a sample of an element return to the ground state.This emitted energy can be used to determine theA) mass of the sample
B) volume of the sample
C) identity of the element
D) number of moles of the element

Answers

Answer 1
Answer: The answer is C. The specific amount of energy emitted when electrons jump from excited states to the ground state refers to emission spectrum. The energy is emitted in the form of photons, and the photons have very specific wavelengths (energy) that correspond to the energy gaps between the excited states and the ground state. The specific wavelengths of light emitted are referred to as the "emission spectrum," and each element produces a different emission spectrum. Thus, this emitted energy can be used to identify the element from which your sample was taken.
Answer 2
Answer:

Answer:

C.

Explanation:

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A. Chlorine
B. Sulfur
C. Oxygen
D. None of the above

Answers

Answer:

D. None of the above

Explanation:

All the answer choices listed only have 2-3 items in the electron configuration.

I need help with energy

Answers

Answer:

Explanation:

The correct answer is

energy resulting from the flow of charged particles , such as electrons or ions.

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Would you describe acetone in the gaseous state as a vapor or gas

Answers

Acetone is a vapor, since it is normally a liquid at room temperature, which is the definition of a vapor.

What evidence of a chemical reaction might you see dropping an alka seltzer

Answers

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Compare the shape and volume of solids, liquids and gases.

Answers

Solids have both fixed volumes and fixed shapes. 
Liquids have fixed volumes, but their shapes depend upon the containers in which they are held. 
Gases have neither fixed volumes nor fixed shapes, and expand to fill their containers.

Is NO a polar molecule?

Answers

Electronegativity values are useful in determining if a bond is to be classified as nonpolar covalent, polar covalent or ionic. The electronegativities of oxygen and nitrogen are respectively, 3.44 and 3.04 on Pauling scale, the electronegativity difference being, 0.4. The bond is considered to be non-polar covalent.
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