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Darina [25.2K]
3 years ago
15

What is the mass of an atom with 15 neutrons and 13 electrons ?

Chemistry
1 answer:
slava [35]3 years ago
4 0
The mass would be 28. The mass of an atom equals the number of neutrons and protons added together. In this case, they do not say the protons. But we must use our inside knowledge to know that the number of protons equals the number of electrons. Thus, your number of protons would be 13
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Adding a catalyst  will cause the greatest increase in the rate of reaction for this chemical reaction , 8Zn(s) + S8(s) 8ZnS(s).                                                         ---> adding a catalyst always affects the rate of a reaction."

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