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kondor19780726 [428]
3 years ago
7

The sun sum of protons and neutrons in the nucleus of an atom.

Chemistry
1 answer:
a_sh-v [17]3 years ago
7 0
Answer is the mass of the atom. Protons + neutrons= mass
Let's say you have oxygen with a mass of 16.
Oxygen has 8 protons
To find neutrons subtract 16-8= 8
So it would also be 8 neutrons.
Example of how to find mass if you know protons + neutrons:
Sodium has 11 protons and 12 neutrons. Add the protons and neutrons
11 + 12= 23
Mass is 23
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Answer:

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Feel bad for Franco.

6 0
3 years ago
I really need help please
Greeley [361]

Answer:

I think it's B

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Dmitriy789 [7]

Lithium sulfate is Li2SO4

Strontium chlorate is Sr(ClO3)2

Strontium sulfate is SrSO4

 

So the complete balanced chemical reaction for this is:

 

Li2SO4 (aq) +  Sr(ClO3)2 (aq) -->  SrSO4 (s)  +  2 LiClO3 (aq)

 

 

This is a type of double replacement reaction since there is an exchange of ions.

4 0
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Please answer number12
densk [106]
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Answer:

D

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The proberties of the substances that are produced are different from the properties of the original substances.

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