hannnaamariiee4829 hannnaamariiee4829

03-11-2017
Chemistry

contestada

An isotope of yttrium has 39 protons and 59 neutrons. what is the atomic mass of that isotope?

Respuesta :

ahmedishaal ahmedishaal

13-11-2017

we can define atomic mass the total of number of protons and number of neutrons in an atom or isotope.
So when an isotope of yttrium has 39 protons and 59 neutrons, its atomic mass is equal to;
number of protons + number of neutrons = 39 + 59 = 98

Answer Link

Otras preguntas

Tell me some facts about the Saleh Witch Trialswill give brainlist <3

1. ____ (la/lo) quiero. La madre: ¿Quieres los pantalones negros? Sandra: Sí, 2. ____ (los/las) quiero. La madre: Bueno, te compro los pantalones negros. Sandra

What is the area of this figure? Enter your answer in the box.

What does Robinson gain while being held as a slave by the pirates?

if quick will mark brainliest

Which pair of statements about the lengths of two sides of the triangle?!!! pls help !!!(Sorry for the blurry photo)

Maplewood Supply received a $5,270 invoice dated 4/15/10. The $5,270 included $270 freight. Terms were 3/10, 2/30, n/60. a. If Maplewood pays the invoice on Apr

help what is 3²×3⁴×3³=?

Which of the following is an example of the endocrine system directly interacting with the nervous system?A. The vertebrae protect the spinal card from injury.B

plsssssssssssssssssssssssssssssssssssssssssssssss help meeeeee im having trouble and i need help!