bellbrianna57 bellbrianna57

03-11-2020
Chemistry

contestada

an electrically neutral atom consists of 15 neutrons, 13 electrons, and a number
of protons. What is its mass number?

A.13

B.15

C.28

D.30

Respuesta :

lukegreen1977 lukegreen1977

03-11-2020

Answer:c

Explanation: it states that the atom is neutral, meaning the number of electrons and protons are the same. so if there are 13 electrons, there are 13 protons. And the mass number is neutrons plus protons. So 13+15 is 28

Answer Link

Otras preguntas

Mis hermanos y yo no tenemos los mismos profesores. mi hermano tomás estudia el espa?ol. _______ profesor de espa?ol es el se?or morales. yo también estudio el

Blood is carried away from the heart to provide oxygen to the rest of the body by arteries, capillaries, veins, or ventricles.

find the exact value. if the expression is undefined write undefined. csc 135°

Explain why, in terms of the energy involved in bond breaking and bond making, the combustion of methane is exothermic.

Simplify − 2 x − y − 2 z + 4 x − 2 y + 3 z

The price of an item has been reduced by 75% . The original price was $60 . What is the price of the item now

Match the lines from Chaucer's The Canterbury Tales to the characters they describe.TilesAnd honoured everywhere for worthiness. At Alexandria, he, when it was

Geometry help please

Erika bought 3 1/2 yards of fabric if she uses 2/3 of fabric to make a curtain how much will she have left

¿Cómo te llamas y cuántos años tienes? ¿Qué te gusta hacer?