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Archy [21]
4 years ago
12

What is the difference between the mass number of an isotope and its atomic number?

Chemistry
1 answer:
Ksivusya [100]4 years ago
5 0
The atomic number is the number of Protons on the nucleus of the atom, whereas the mass number of some isotope is the mass of the protons plus the mass of the neutrons. That's the difference between isotopes: number of neutrons.
Ask me if you need any help ;)
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If I have 7.5 L of a gas in a piston at a pressure of 1.75 atm and compress the gas until its volume is 3.7 L, what will the new
Sergio [31]

Answer:

3.55atm

Explanation:

We will apply Boyle's law formula in solving this problem.

P1V1 = P2V2

And with values given in the question

P1=initial pressure of gas = 1.75atm

V1=initial volume of gas =7.5L

P2=final pressure of gas inside new piston in atm

V2=final volume of gas = 3.7L

We need to find the final pressure

From the equation, P1V1 = P2V2,

We make P2 subject

P2 = (P1V1) / V2

P2 = (1.75×7.5)/3.7

P2=3.55atm

Therefore, the new pressure inside the piston is 3.55atm

7 0
4 years ago
In clinical brachytherapy, the supervision of radio elements and dose interpretation are performed by the therapeutic __________
Alex_Xolod [135]

Answer:

Radiation oncologist.

Explanation:

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The oncologist may be defined as the individual that has specialized in the cancer and its treatment. The different radiation might use to kill the cancerous cell and the radio elements are administered in the drugs used during the chemotherapy.

Thus, the answer is radiation oncologist.

4 0
4 years ago
Write a balanced equation for the formation of one mole of nacl(aq) from its elements
Makovka662 [10]
<span>2Na + Cl2 => 2NaCl 1 mol Na + 0.5 mol Cl2 => 1 mol NaCl</span>
8 0
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What animal has a see through body?
fenix001 [56]
A moon jellyfish has a transparent body.
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Draw the principal organic product expected when 2-methylthiophene reacts with hno3. show minimized formal charges, if applicabl
qaws [65]

Answer:

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Explanation:

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5 0
3 years ago
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