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emmainna [20.7K]
3 years ago
8

In the Table of Atomic Particles, various symbols have two numbers. The top number represents the atomic mass of the particle, w

hat do the bottom numbers represent?
Select all that apply.
atomic weight
charge
atomic number
number of neutrons
number of positrons
number of electrons
number of mesons
number of protons
Chemistry
2 answers:
MArishka [77]3 years ago
5 0
Atomic number and number of electrons.
sergiy2304 [10]3 years ago
5 0

Answer:

The bottom numbers represent the charge, the number of protons, and the atomic number. :)

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Ludmilka [50]

Answer: 2.88×10^{24}atoms P_{2}O_{5}

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0.680g P_{2} O_{5} *\frac{1molP_{2} O_{5} }{141.948gP_{2} O_{5} } =4.79mol P_{2} O_{5}

2. Now that it is converted to moles, we must convert it to atoms by multiplying it by Avogadro's number.

4.79molP_{2} O_{5} *\frac{6.022X10^{23} }{1mol} =2.88*10^{24}

With this information, we know that there are 2.88X10^{24} total atoms in 0.680 grams P_{2} O_{5}.

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