brennabananas7431 brennabananas7431

03-10-2017
Chemistry

contestada

If the atomic number of an element is 9 and the mass number is 19, how many neutrons does the atom have?

Respuesta :

Аноним Аноним

05-10-2017

To find the number of neutrons.....

NEUTRONS = MASS NUMBER - ATOMIC NUMBER ( PROTONS)

NEUTRONS = 19 - 9

So this element has 10 neutrons

Answer Link

Otras preguntas

Which reason best explains Thomas Jefferson's purpose for repeating the phrase \"He has\" in the list of grievances in the Declaration of Independence?

what are the benefits of wax?

that I have adjxjsj hshdjx issixjnxn jsnsnsjdjs endjdjdn

1. Solve the system by using a table. 3y=4x+7 , -4x-4y=28. These are the possible solutions: A) (–4, –3), B) (–3, –4), C) (4, 3), D) (3, 4). 2.Solve by grap

A hexagonal pyramid is cut by a plane as shown in the diagram. What is the shape of the resulting cross section? see diagram

Isaac has spent $20 to set up cable service and the monthly fee is $54.95. Write an equation to represent the total amount it costs, C(t) to have cable service

"Which statement about circle O is necessarily true, assuming and are tangents to circle O? "

Lisa goes to the doctor because she is experiencing the need for urination more frequently than normal and has been burning sensation when she does. Lisa's symp

Express these numbers in standard form: 1) 35.18 * 1000000; 2) 0.00000235 / 1000000

hi there can anyone help me out with this please.