Formula Flashcards
What is the molecular formula?
The actual number of atoms of each element in a molecule.
What is the structural formula?
Show the atoms carbon by carbon with the attached bed hydrogens and functional groups.
What is the displayed formula?
Shows how all the atoms are arranged and all the bonds between them.
What is the skeletal formula?
Show only the bonds of carbon skeleton with any functional groups. The hydrogen and carbon atoms aren’t shown. This is handy for drawing large complicated structur s, like cyclic hydrocarbons.
What is the equation to work out the concentration of an atom?
N = CV
Number of moles = concentration X volume (dm3)
How do you convert dm3 to cm?
Divide by 1000
What is the equation to work out the mass of an element?
N= m/molar mass
Number of moles = mass divided by molar mass
What is the equation to work out the number of moles in a gas?
Ngas = v(dm3) divided by 24
Number of moles in a gas = volume/24
What is the empirical formula?
The simplest ratio of atoms of each element in a compound
