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

HELP ASAP ELA POEM!!!!! I will give brainlist the the first person!!! Write your own poem imitating Mary Oliver poem called "the wild geese" by following this f

SECOND TIME ASKING HELP!!! 6. Jackie has n nickels and q quarters in her pocket. The total value of the coins is at least $24.75. Write an inequality that repre

SECOND TIME ASKING HELP!!! 6. Jackie has n nickels and q quarters in her pocket. The total value of the coins is at least $24.75. Write an inequality that repre

What happened to Old Major? A. He died peacefully in his sleep. B .Mr. Jones sent him to a neighboring farm. C. Mr. Jones killed him for the meat. D. Mr. Jones

which organization was created to help blacks after the end of slavery?

Something times 3=-180

Im struggling with these 2 problems

Write the equation so that a = 1: x2 + -6 x = -13 Complete the square: x2 – 6x + = –13 +

Which of the following functions is most likely to have the smallest value for yifx is large? (Assume & is positive) O a direct variation function with a sm

1+0.9+0.08+0.001 Somebody can help me please