RudleyMillia RudleyMillia

12-10-2016
Chemistry

contestada

What is the total number of neutrons in the nucleus of a neutral atom that has 19 electrons and a mass of 39?
a. 19
b.20
c.39
d.58

Respuesta :

olabido olabido

18-06-2018

20 because
mass no=electrons+neutrons
so to find neutrons
mass no-electrons=neutron

Answer Link

Otras preguntas

PLZ HURRY IT'S URGENT! Which describes a process where a precipitate is formed? A. A solution of AgNO3 is added to a solution of CaCl2 to produce solid AgCl an

What does a biological community consist of? A. All of the different population of species in one ge

Referring to the scale is a way to estimate the wind speed.

70 POINTS!!!! What is a sovereignty? a.The right of the government to make laws at both the state and local levels. b.The power of a state to make laws without

Which of the following is an incorrect pairing? a. CH2::CHCH2CH2CH2CH2CH2CH3, alkene b. CH3OCH3, amine c. CH3CH2OH, alcohol d. (CH3)2CO, ketone

A transverse wave on a string has an amplitude A. A tiny spot on the string is colored red. As one cycle of the wave passes by, what is the total distance trave

Priscilla graphed function g, a transformation of the quadratic parent function f(x)=1/2f(x+2)-1 which statement is correct? A.)Priscilla made a mistake when a

Which equation involves a prime quadratic and cannot be solved by factoring? A. x2 + 5x − 4 = 0 B. x2 − x − 6 = 0 C. x2 + 3x − 4 = 0 D. x2 + 6x + 9 = 0 Rese

The force required to maintain an object at a constant velocity in free space is equal to

1. Which of the following could be plausible?(a) an offer(c) an excuse(b) a solution(d) a lie