Amount of substance

Description

Flashcards on Amount of substance , created by sabah g on 03/01/2016.
sabah g
Flashcards by sabah g, updated more than 1 year ago
sabah g
Created by sabah g almost 9 years ago
5
0

Resource summary

Question Answer
Defenition of mole The amount of substance which contains as many elementary particles as there are atoms in exactly 12g of carbon-12.
How do you find the number of particles? No. of particles = (6.02x10^2) x moles
Define molar mass The mass of one mole of substance.
Define relative atomic mass The weighted mean mass of an element compared with 1/12 of the mass of an atom of carbon-12.
How do you find the relative molecular mass? Add up the individual relative atomic masses of the elements which make up the compounds.
How do you calculate the percentage by mass of an element in a compound? % composition= (mass no. of M x no. of element) ------------------------------------------------------ x 100 Mr of total compound
How do you calculate the Ep formula from the percentage of one reactant? If the percentage of only one element is given, then subtract this number from 100 to find the percentage of the other element. Divide the percentage by the Mr, then the smallest value by the other larger values to find the ratio.
Define molar gas volume. The volume per mole of gas molecules at a stated temperature and pressure.
What is the ideal gas equation? pV = nRT R is always 8.314Jmol-1K-1 Temperature is in Kelvin Pressure is in Pascals
What is percentage yield? A measure of how efficiently the reactants are converted into products.
How is percentage yield calculated? %Yield = actual yield of product ------------------------------------------- X100 theoretical yield of product
What is atom economy? A measure of how much waste product a reaction produces.
How do you calculate atom economy? % atom economy = sum of MM of desired product ------------------------------------------------- x100 sum of molar mass of all products
Show full summary Hide full summary

Similar

Amount of Substance and The Mole
Bee Brittain
SI Base Units Level 1-2
Oliver Balay
A2 Equilibrium
MrsSeymour
Balancing Equations
Irene Binil
OCR A A2 Chemistry
Sarah McLean
Steps to make up a standard solution
Irene Binil
Amount of substance equations
Irene Binil
Transition Metals
siobhan.quirk
Reacting Quantities
Bee Brittain
Amount of Substance
Beth Ritchie
Nuclear Magnetic Resonance Spectroscopy
Kathryn Bellis