Katejoh342 Katejoh342

08-02-2021
Mathematics

contestada

An atom of a certain element has 21 protons, 21
electrons, and a mass number of 45. How many
neutrons are in this atom?

Respuesta :

olioctipi olioctipi

08-02-2021

45-21=24 neutrons :)

As the generally accepted mass of an electron is 0. So, to find the mass of neutrons, minus the protons from the total mass.

Answer Link

Otras preguntas

The time that passes between the time you see lightning and you hear the thunder depends on your distance from the lightning. With each km from the lightning 3

Which of the following is NOT TRUE about life insurance applications? A The application may contain all the information that underwriting needs to approve the i

Nadia says the hypotenuse of this right triangle has a length of 73 because the pythagorean theorem states that (28 45) squared = 73 squared. 3 squares are posi

Question in the picture please help

A lightbulb manufacturer must test a to ensure sample of lightbulbs that quality and safety standards are being met. Which of these methods will produce the mos

Young artists are using their artwork to bring awareness to social change

need help with this question

A. Ronnie lost his homework. He became very upset. His teacher asked him to redo the assignment. Ronnie smiled. He told her he would be sure to turn it in the n

The difference of a number and its reciprocal is 35/6 Find the number.

Select the correct answer. two triangles, abc and cde, share a common vertex c on a grid. in triangle abc, side ab is labeled 4x minus 1, side bc is labeled 4,