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Plz help...Thanks.
According to the table above, about how much mass would a nucleus that is composed of 15 protons and 18 neutrons have?

18 amu
33 amu
23 amu
15 amu

Plz helpThanks According to the table above about how much mass would a nucleus that is composed of 15 protons and 18 neutrons have 18 amu 33 amu 23 amu 15 amu class=

Respuesta :

Answer: B) 33 amu

Explanation:

According to the table, the mass of a proton is 1.0073 amu and the mass of a neutron is 1.0087 amu.

To find the mass, we have to perform the following calculation:

15 x 1.0073 + 18 x 1.0087 = 33.2661  amu

Rounding up, the approximate mass of the nucleus is 33 amu.

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