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3 years ago

Which of the following best describes isotopes?

Chemistry

1 answer:

LenKa [72]3 years ago

8 0

Answer: An element with the same number of protons, but a different number of neutrons

Explanation:

The # of protons in an atom is what determines what atom it is (hydrogen has 1 proton, helium has 2 protons, etc ...). You cannot change the number of protons in an atom without changing what element the atom is.

The number of electrons in atoms varies greatly because electrons are constantly gained, lost, and shared during chemical reactions.

An isotope is a variation of the same element (so they must have the same # of protons) that have different masses (and therefore a different number of neutrons).

The answer is the fourth choice, "An element with the same number of protons, but a different number of neutrons"

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Your friend makes the statement that, “Water boils at a higher temperature than ethanol.” To which step of the scientific method

deff fn [24]

Explanation:

Experiment because water boils at 100°c and ethanol 80°co

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4 years ago

heeeeelp what type of reaction is shown below? Fe+ Ci2= FeCi3 (i need and explination of how i got the answer) heelp pleass

OlgaM077 [116]

Answer:

a chemical reaction

Explanation:

The fact that you are combining two different elements together makes this a chemical reaction. (hope that helps)

3 0

3 years ago

Problem: Janna, a student of a chemistry class, told her friend that she learnt in class that bottled water is not pure. Kim, he

Ghella [55]

Answer:

The bottle is labeled pure so it probably is pure.

Explanation:

4 0

2 years ago

Match the term with its description. (4 points)

Ne4ueva [31]

Answer:

A. a

B. c

C. b

D. d

Explanation:

3 0

3 years ago

consider an atom having four distinct neergy levels. if an electron is able to make transitions between, any two levels, how man

ludmilkaskok [199]

Answer:

6 different frequencies

Explanation:

From energy level 1 to 2 is one frequency, from energy level 1 to 3 is one frequency and From energy level 1 to 4 is one frequency. So, we have a total of 3 frequencies for transition from energy level 1.

From energy level 2 to 3 is one frequency and from energy level 2 to 4 is one frequency. So, we have a total of 2 frequencies for transition from energy level 2.

From energy level 3 to 4 is one frequency.

So we have a total of 3 + 2 + 1 different frequencies = 6 different frequencies.

Note that the reverse process for each step produces the same frequency as the step in consideration.

8 0

3 years ago