Atoms and void would be the answer
Answer:
d. 75 protons, 110 neutrons
Explanation:
In an isotope, the number next to the number of the atom is the mass number (Protons + neutrons). Rhenium has as atomic number 75, that means Rhenium has <em>75 protons</em>. As atomic mass, 185, is the sum of protons and neutrons, number of neutrons is:
185 - 75 = <em>110 neutrons</em>
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Thus, right answer is:
<em>d. 75 protons, 110 neutrons
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The mass of Na22 in the sample is 0.053746 g.
We have a sample with 2 isotopes of sodium. Na22 with a relative atomic mass of 21.9944 u and Na23 with a relative atomic mass of 22.9898 u. Let "x" be the fractional abundance of Na22 and "1-x" the fractional abundance of Na23. If the apparent atomic mass is 22.9501 u, we can state the following expression.
The mass of the sample is 1.3476 g. We can find the mass of Na22 in the sample by multiplying it by its fractional abundance.
The mass of Na22 in the sample is 0.053746 g.
You can learn more about isotopes here: brainly.com/question/21536220
Answer:
because their ions are free to move from place to place.
Explanation: see answer