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

Which describes the combined variation in the formula h=2a/b? h varies jointly with 2 and A and inversely with b. h varies directly with A and inversely with

what is some major challenge facing the accounting profession ?

Rules pertaining to proper etiquette for a sport are always written in the official rules. please select the best answer from the choices provided. t f

What happened when odysseus appealed to the queen of the phaeacians

how do you do one step equations?

what is known as the substance that is dissolved

what is the area of the parallelogram?

Write down the irrational numbers from the following.1/3, 0.65, square root 6, 2/5, cube root 8, pie

the volume of this is cone 923.16 cm what is the radius of this cone

If a contingent liability is probable and the amount of the liability can be reasonably estimated, it is a. not recorded but should be disclosed. b. recorded an