Avogadro's number can be defined as a sample of any element weighs a number of grams equal to the average atomic mass of that element and contains 6.022 x 10^23 atoms or one mole of that element. Calculate the mass of 1 mole of silicon atoms.

A)32.19

B) 12.09

C) 14.0 g

D) 28.1 g

Write two balanced equations 1. dissolving of solid sodium hydroxide in water 2. the reaction of sodium hydroxide solution with hydrochloric acid

Agas is contained in a thick walled balloon when the pressure changes from 1.21 atm to 2.52 the volume changes from 3.75 l to 1.72 l and the temperature change from 293k to blank k

The image shows a process that releases nuclear energy which statement best identifies the process shown the process must be fusion because energy is released the process must be fusion because of have your nucleus formed a smaller nuclei the process must be fission because a large nucleus breaks into smaller nuclei the process must be fission because neutrons are formed