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skad [1K]
3 years ago
5

How to find the mass number of an element?

Chemistry
1 answer:
mote1985 [20]3 years ago
8 0
Mass is the number of protons + number of neutrons. Because electrons don't have significant weight.
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Atoms have no electric charge because the protons and electrons "cancel out" each others charges.

Explanation:

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I think it is D but i'm not sure

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A chef makes salad dressing by mixing oil, vinegar, and spices. Which type of matter is the salad dressing? A. Element B. Compou
Allisa [31]
<h3>Answer:</h3>

              Heterogeneous mixture

<h3>Explanation:</h3>

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4 years ago
Read 2 more answers
Give the nuclear symbol for the isotope of phosphorus for which a=31? enter the nuclear symbol for the isotope (e.g., 42he).
Bogdan [553]
A = number of mass = 31 => number of protons + number of neutrons = 31

Phosphours, Z = atomic number = 15 = number of protons

Symbol of the element phosphorus = P

=> The symbol of the isotope is the symbol of the element, P, with the number of mass, 31, to the left, as a superscript, and the atomic number, 15, to the left, as a suscript.
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Ddttetetetetetetetetetetet
aniked [119]
Shall I join the spamming of the keyboard?
meowoowwooww (=^ェ^=)
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