Formulae And Amounts Of Substance Flashcards
(6 cards)
1
Q
What is empirical formula?
A
A formula which shows the simplest whole number ratio of atoms of each element in a compound
2
Q
What is molecular formula?
A
A formula which shows the actual number of atoms of each element in a molecule
3
Q
What is molar gas volume?
A
The volume of one mole of gas under specified conditions of temperature and pressure.
24dm cubed
20 degrees Celsius
One atmosphere pressure
4
Q
What is percentage yield?
A
Actual yield divided by theoretical yield multiplied by 100
5
Q
What is atom economy?
A
Mass of desired products divided by total mass of products multiplied by 100
6
Q
How is the mass percent of an element in a compound calculated?
A
Mass % of an element = (Mass of element in 1 mole / Molar mass of compound) x 100
