Calculating Quantity/Activity

Question 1

how many grams of X in 1 mole?

Answer 1

mass = moles x mr - look at relative molecular mass then x 1 (mole)

Question 2

how many mg of X in 1 mole?

Answer 2

multiply number grams in 1 mole by 1000

Question 3

how many mg of X in 1 micromole?

Answer 3

X mg in 1 mole / by 1000 = millimole / by 1000 again = micromole

Question 4

calculate specific activity of X in micro moles/min/mg

Answer 4

micromoles / min = 0.055 / no. mg/mole

Question 5

calculate specific activity of X in micro moles/second/mg

Answer 5

micromoles/min/mg / 60 (seconds)

Question 6

calculate in specific activity of X in moles/s/kg

Answer 6

mols/s/mg x 1000 = g, x 1000 = kg