Chapter 3

Question 1

what is avagadro’s number

Answer 1

6.022 x 10^23

Question 2

definition of avagadro’s number

Answer 2

the number of particles (atoms) in one mole of any substance

Question 3

molar mass definiton

Answer 3

the sum of all atomic weights present in a chemical formula

Question 4

molecules to moles conversion

Answer 4

x molecules = 1 mol/ 6.022 x 10^23 molecules = x mol

Question 5

percent composition by mass equation

Answer 5

% comp by mass = mass of specific element / total mass of sample