amount of substance Flashcards
what is the calculation for moles
moles = mass/mr
what is the calculation for moles in solutions
what units must volume be in
moles = concentration x volume ( dm 3 )
what is the ideal gas equation
what is the units for p
what is the units for v
what does R mean
what is units for T
pV= nRT
Pa
m 3
gas constant = 8.31
Kelvin
how do we calculate Cm to Dm
/1000
name the steps in balancing ionic equations
- make sure ur equation is balanced
- draw out ionic formulas of each compound
- cancel out a compound that appears on both sides
4.balance the final charges
name the steps in finding volume of gases
- write out an equation and balance it
- work out the number of moles
- find the molar ratio
- use the ideal gas equation
what are titrations used for
to find the concentration of a acid or alkali
how to find the concentration of an acid or alkali
- write out and balance equation
- calculate number of moles
3.find molar ratio - use conc= moles/vol
what is the formula for percentage yield
actual/theoretical x 100
what is the atom economy equation
mr of desired product/ sum of mr of all reactants x 100
What is the conversion from mg to g
1mg = 0.001 g
How do you convert c to kelvin
+273.15
How can u calculate percentage uncertainty
Uncertainty/mass added x 100
what is the importance of percentage yield
to get as much product possible in the reaction
what is the importance of percentage yield
to get as much product possible in the reaction
