Catheryn Catheryn

03-09-2014
Chemistry

contestada

How many neutrons are probably in the nucleus of an element of atomic weight 197?
a. 43
b. 79
c. 83
d. 100
e. 118

Respuesta :

pyromorphite pyromorphite

04-09-2014

atomic weight = 197
symbol = Au
electrons = 79

neutrons = 197 - 79 = 118

answer: E

Answer Link

Otras preguntas

Read the excerpt from “The Story of the Three Little Pigs.” Once upon a time there was an old Sow with three little Pigs, and as she had not enough to keep them

Thank you so much 15p

Sam deposited $500 in a new bank account. The bank pays 4% interest compounded annually on this account. Sam makes no more deposits or withdrawals. What is the

Which of the following organizations might help you learn how to be financially literate?(1 point) 1. the IRS 2. the Department of the Treasury 3. Goldman Sachs

If x=2, y=-3 and z=4 evaluate 6x-z

need help please and thanks

Please help and explain.

Suppose f(x) = 3x +3, g(x) = (x + 2)^2 + 2, and h(x) = 2. Evaluate 2 f(5) - 1/2 (g(3))^2 + h(3)f(3) – 2=

Those mangoes have a delicious flavour. We bought them yesterday.

True or false help pls