amount of substance Flashcards
what is the definition for Avogadro’s constant
number of atoms in 12g of C12
how do you calculate number of particles
moles * avogado’s constant
give the definition for relative atomic mass
average mass of one atom of an element / a twelfth the mass of a C12 atom
what is the definition for relative molecular mass
average mass of one molecule / twelfth the mass of a C12 atom
what is the formula for moles with a mass
moles = mass /Mr
what is the equation for percentage yield
actual/theoretical * 100
what is the equation for atom economy
Mr desired product/ total Mr of all product * 100
why is it desirable to have a high atom economy and how can you improve it
to increase profits which reduces waste products
to improve atom economy you can sell waste products
what is concentration
amount of solute dissolved in known volume
what is the equation for moles w conc
conc * volume = moles
what is the equation for density
density (g dm-3) = mass (g) / volume (cm3)
