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

90 PTS HELP Maria has already written 2/5 of her 1,000 word essay. If she continues writing at the same pace of 6 words per minute, which expression shows the a

Raise the fraction to the highest term 1/5 to 15ths=

Youssef can either way from his home to his workplace or ride his bicycle. he walks at a pace of 1 block per min, but he can travel 1 block in 20 sec on his bic

find the radius of the oblique cylinder (PLEASE HELP EXTRA POINTS)

rachel received a $70 gift card for a coffee store. she used it in buying some coffee that cost $7.44 per pound. after buying the coffee, she had $25.36 left on

PLEASE HELP.A charged particle in an accelerated motion produces EM radiation.In an atom the electrons have accelerated motion.Does it means that all electrons

What is the verbal description for y=3x-2

Which is warmer -3°c or -10°C

Blue's Berry Farm charges Percy a total of $24.75 for entrance and 2.5 kilograms of strawberries. The entrance fee is $6, and the price for each kilogram of str

Write the equation of the line that passes through (-1, 8) and is parallel to the line that passes through (5, -1) and (2, -5).