Exam prep Flashcards
How do you calculate moles (2)
n = cv
n = m / gfm
What is the definition of molar (e.g. 7mMolar)
moles / L
(Moles per Litre)
How do you calculate the amount of fluoride in x drops
A = (m x atomic weight) / gfm
What is 1 PPM (2)
1 PPM = 1mg in 1000g
1PPM = 1mg in 1000mL
what is %w/w
xg in 100g
what is %v/v
xmL in 100mL
what formula is used for dilutions
C1 V1 = C2 V2
How is double and single strength calculated
Double strength = x/20
Single strength = x/40
how do you calculate how much substance is needed for a extemporary preparation
(have / total) x Target
how do you calculate how much substance is needed for a extemporary preparation with solid (displacement) (2)
- (have / total) x Target
- ans x density
How do you calculate the displacement volume
dv = change / mass (g)
how do you calculate how much base is needed
BN = nominal base - (drug weight (g) / dv)
Round up to…
Round down to…
Round up to SUPPLY
Round down to DOSE
what is the definition of 1 in 60’000
1g in 60’000mL
How is BMI calculated
weight (kg) / [height (m)]²
what is the formula for zero-order kinetics (2)
target concentration = initial concentration - rate constant x time
[A] = [Ao] - k x t
what is the formula for fractional bioavailability (F)
drug in body / dose = fractional bioavailability (F)
How do you express 57 x 10⁻² as a decimal
57 x 10⁻² = 57 x 1/10²
57 x 1/100 = 57/100
= 0.57
how do you calculate the mean (2)
- addition of all numbers
- the sum of all numbers/number of values
how do you calculate the median value (2)
- sort numbers in ascending order
- median = middle value
