Formula Flashcards
1
Q
What is the formula to work out mass?
A
Mass(g) = Mr x n
2
Q
What is the formula to work out Concentration?
A
Concentration(moldm^-3) = n / volume(dm^3)
3
Q
What is the formula for percentage yield?
A
Percentage yield = (actual/theory) x 100
4
Q
What is the Ideal gas equation? What does each letter stand for and what are they measured in?
A
pv = nRT p = Pressure (pa) v = Volume (m^3) n = no. of moles T = Temperature (Kelvin) R = Gas constant (8.31 JK^-1 mol^-1)
5
Q
What is the general formula for an alkene?
A
C(n)H(2n)
6
Q
What is the general formula for an alkane?
A
C(n)H(2n+2)
7
Q
What is the general formula for an cycloalkane?
A
C(n)H(2n)
8
Q
What is the formula for entropy?
A
∆S = ∑S(Products) - ∑S(reactants)
9
Q
What is the formula for change in entropy surroundings?
A
∆S(Surroundings) = (-∆H(System))/ T(Kelvin)
