prinncess56bg prinncess56bg

23-01-2017
Chemistry

contestada

the mass number is an average of the masses of all naturally occurring isotopes of an element true or false

Respuesta :

SapphireMoon SapphireMoon

23-01-2017

False. The mass number is the sum of the protons and neutrons in the most common isotope. The atomic weight or atomic mass is the average of the masses of the naturally occurring isotopes.

Answer Link

Otras preguntas

3x^2+8x-3 select two values of x that are roots

Which statement would most likely come from someone who supported a unitary parliamentary government? A- "The king is the only one who has the divine right to

How did the colony of Brazil change after Napoleon attacked Portugal? A. It was given to France in exchange for an end to French aggression. B. It exper

Hydrogen bonding is necessary for

Sound waves can travel through which mediums? A)only liquids and gases B)only solids and liquids C)solids, liquids, and gases D)only solids and gases

An open cone has a slant height of 5 cm and a cirved srface area of 251 cm square.find the radius of its corcular base leaving your answer correct to 3 signific

Jackie is trying on clothes in the dressing room of Highspot Department Store. Jackie goes home, but leaves her purse in the dressing room. A Highspot employee,

difference between cytoplasm ans cell sap?

If each acute angle of a parallelogram measures 59 degrees, then what is the masure of each obtuse angle?

Need help on this thanks