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

One result of the water table reaching the surface is a lake true or false

In the equation 5 p = 7, what is the English translation of the variable, p? A. is equal to B. plus C. a number D. decreased by

According to the Declaration of Independence, when do the people have the right to overthrow their government? when the government taxes the people too mu

find the last common factor of 12 and 36

What legacy did World War 1 leave behind?

A(n) _____ is a general belief about a person or group of people that may not be true.

If if takes 3 mins to sew 1in, how many mins will it take to sew 9ft?

Julie packed 18 DVDs in each of 4 boxes. She packed 15 DVDs in each of 5 boxes. She has 8 DVDs left over. How many DVDs does Julie have?

PLEASE HELP! DUE TOMORROW Write each equation in standard form. y - 4 = -3(x - 3) and y + 9= 2(x + 5)

The Soviet Union found itself losing the Afghanistan War to the ill-equipped rebel forces.