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Marina CMI [18]
4 years ago
9

What information is provides by the mass number A, which is the superscript in the atomic symbol?

Chemistry
1 answer:
fredd [130]4 years ago
6 0

Answer:

The mass number tells us the number (the sum of nucleons) of protons and neutrons in the nucleus of an atom.

Explanation:

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The reason why the number I calculated for Avogadro’s number may match the actual number is because the comparison of the number of molecules in the top layer to the number of moles in the top layer is the definition of Avogadro’s number. It is the amount of molecules in a mole <span>of any given substance.</span>
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3 years ago
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To determine the number of gas particles in the vessel we add all of the components of the gas. For this, we need to convert the mass to moles by the molar mass. Then, from moles to molecules by the avogadro's number.

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3 years ago
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In a reversible reaction, the endothermic reaction absorbs ____________ the exothermic reaction releases. A. less energy than B.
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A+B\rightleftharpoons C+D

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What does the rate law use to determine the rate of a reaction?
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