kevlazo789 kevlazo789

04-09-2017
Chemistry

contestada

An atom of potassium has 19 protons and 20 neutrons. what is its mass number?

Respuesta :

Tefnut09 Tefnut09

29-09-2021

Answer:

39

Explanation:

Mass number = Number of protons + number of neutrons

Therefore,

19 + 20 = 39

Answer Link

Otras preguntas

use the figure at the right to name the following. Course 2 chapter 7 Goog luck! Am putting max points

Can anyone explain how to solve these problems?

Please help I'm struggling with math and I need some clarity from someone

Which equation best represents the line in the graph

Prove that square root of 3 is irrational

What happens to the energy symbols on the iron block as it is heated? I am in 8th grade k12

What is the purpose of the money by junot biaz

A line passes through the points (1.4) and (2, 2). What is the equation of this line?

Why is Myrtle attracted to Tom? The Great Gatsby

Which equation is graphed here?