griseldadelgado351 griseldadelgado351

02-10-2020
Chemistry

contestada

how many neutrons does a calcium atom have if the mass number is 42

Respuesta :

jsoso102000 jsoso102000

02-10-2020

Answer:

22

Explanation:

calcium has 20 proteins

and given the mass number is 42.

mass number = protons + neutrons

42= 20+ n

n= 42-20

n= 22

Answer Link

Otras preguntas

How many terms are in 5x4-2x3+x-4

The inverse of 2x^3+3

When should governments be changed and who should change them?

what single overriding concern has defined the evolution of Apple and determines its success?

Which of the following is NOT true about unit rates? A. A unit rate relates a quantity to 1. B. Unit rates can be used to compare two rates. C. Any rate i

What is the relationship between words and pictures? Please answer ASAP thanks!

What examples do you see in the past and modern society

What date on the timeline marks the beginning of the Jewish Diaspora? A. c. 1200 BCE B. c. 900 BCE C. c. 722 BCE D. c. 587 BCE

Plzzzzz help I don’t understand and this question is worth 23 points that’s how much I need to know how to do this and I need to know that answer plz tell me th

The principal has cancelled the prom. You are trying to persuade his/her to reconsider his/her decision