physical: amount of substance

Question 1

whats the link with avogadros and moles

Answer 1

6.02 x 10^23 = one mole

Question 2

whats the equation to calculate number of particles

Answer 2

number of particles= avogadros x number of moles

Question 3

whats the equation involving volume concentration and moles

Answer 3

moles(n)= concentration(moldm-3) x volume(dm3)

Question 4

whats the equation involving moles mass and mr

Answer 4

moles= mass / mr

Question 5

whats the ideal gas equation

Answer 5

PV=nRT

Question 6

what are the units for pv=nrt

Answer 6

P=Pa
V=m3
n=moles
T=K

Question 7

what is empirical formula

Answer 7

simplest whole number ratio of elements in a compound

Question 8

how do you calculate empirical formula

Answer 8

find moles using mass given. divide by smallest number .

Question 9

what is molecular formula

Answer 9

actual number of atoms in each element in a compund

Question 10

whats the equation for percentage yield

Answer 10

actual yield/theoretical yield x 100

Question 11

how do you calculate atom economy

Answer 11

mr of desired/ sum of all reactants masses x100