jasmine76 jasmine76

18-10-2016
Chemistry

contestada

What is the mass of an element with 78 protons and 78 neutrons

Respuesta :

Perlerbear Perlerbear

18-10-2016

156. Atomic mass if the number of protons and neutrons within an atom.

Answer Link

18-10-2016

mass number=number of protons+number of neutrons
so mass number of the element you stated = 78+78 = 156 au

Answer Link

Otras preguntas

Who knows the book Rose Blanche

The two epics written by Homer the Illiad and the Odyssey are considered to be what's known as Primary epics. The third book written by Virgil, The Aeneid , is

Who knows the book Rose Blanche

a store mixes red fescue worth $12 per pound and chewings fescue worth $16 per pound. The mixture is to sell for $15 per pound. Find out how much of each should

The coordinates of the vertices of ANGLE PQR are P(-3,3), Q(2,3), and R(-3,-4). Find the side lengths to the nearest hundredth and the angle measures to the nea

How is correct : "cus" or "cuz" ?

The coordinates of the vertices of ANGLE RST are R(-3,5), and S(4,5), and T(4,-2). Find the side lengths to the nearest hundredth and the angle measures to the

The two epics written by Homer the Illiad and the Odyssey are considered to be what's known as Primary epics. The third book written by Virgil, The Aeneid , is

How many parrallel lines does a triangle,square,trapezoid,pentagon

How many parrallel lines does a triangle,square,trapezoid,pentagon