EkybooachelbyL EkybooachelbyL
  • 04-03-2017
  • Biology
contestada

The atomic mass of potassium is 39. if its atomic number is 19, how many neutron are there

Respuesta :

Souix
Souix Souix
  • 04-03-2017
19. The atomic number indicates how many neutrons there are, and the atomic mass tells us how many protons and neutrons are present within the nucleus of an atom.
Answer Link

Otras preguntas

Which of the following statements about the history of Judaism is false? A. Judaism is considered an important religion today due to the large percentage of peo
What factors caused the slave trade to grow? How did the affect the conditions of the Middle Passage?
How had the townspeople of Gettysburg originally intended to pay for the burial of so many soldiers? a. The townspeople were going to pay for the burials thems
8. A pattern of being late for work or for appointments is usually A. a habit learned early, which is nearly impossible to break. B. directly related to one's
what is the value of the first 3 in 315,421,732
Mily was born, she weighed 8.2 pounds. Two months later she weighed 10.15 pounds. How much weight did Emily gain in two months? a. 1.05 pounds b. 1.95 pounds
Brian is a healthy young man. He has been training with his teammates for a 50-yard dash for months. However, even with practice, he cannot run fast enough to q
45/60 in simplest form
how are curiosity and determination beneficial to a scientist or an inventor?
what services are provided by dental labs