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notka56 [123]
3 years ago
7

Define: Atomic Mass, Mass Number, Isotope

Chemistry
1 answer:
Westkost [7]3 years ago
5 0

Answer:

Explanation:

the mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing for the relative abundances of different isotopes.

the total number of protons and neutrons in a nucleus.

to write the symbol for an isotope, place the atomic number as a subscript and the mass number (protons plus neutrons) as a superscript to the left of the atomic symbol

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To what volume should you dilute 30 mL of a 10.0 M H2SO4 solution to obtain a 0.170 M H2SO4 solution?
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What volume of 0.25 mol/L solution of lead(II)nitrate would be required to form 500mL of a 0.15 mol/L solution of lead(II)nitrat
mafiozo [28]

To solve this we use the equation,

 <span>M1V1 = M2V2</span>

 <span>where M1 is the concentration of the stock solution, V1 is the volume of the stock solution, M2 is the concentration of the new solution and V2 is its volume.</span>

0.25<span> M x V1 = 0.15 M x .500 L</span>

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4 years ago
What is the oxidation number of an element?
Elena L [17]

Answer:

option C is correct

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3 years ago
Read 2 more answers
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