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

What is the first step in solving the inequality -2x > -10 Divide both sides by -2 and reverse the inequality. Add 2 to both sides. Add 10 to both sides Divi

Much of the steady increase in federal government expenditures since 1960 has been caused by

can someone help me?!!!!!

Use the graph to find the difference in temperaturebetween 11 A.M. and 1 P.M.

sorry if i picked the wrong subject Electromagnetic waves are classified into forms such as radio waves, microwaves, and infrared waves, based on the amount of

The graph represents the height y, in feet above the ground of a rock x seconds after it is dropped from a building. Which statement is true? Select each correc

The ratio of counselors to campers at a camp is 1 : 9. The ratio of campers who can swim to campers who cannot swim is 7 : 2. There are 13 counselors. How many

A survey find that 61% of people are married. They ask the same group of people and 75% of them have at least one kid. If 48% are married and have one kid what

Simplify by using factoring: (2a+6b)(6b−2a)−(2a+6b)^2

One only has to look at the size of Claire’s house to know that you can make a lot of money as a doctor