Question

How many milliliter of a suspension base must be mixed with 250 ml of a paroxitine oral suspension 10mg/5 ml,to change its concentation to 0.1%w/v?

Answer 1

$Answer$

Since the density is equal to the mass divided by the volume, so the mass will be equal to the multiplication of the density and mass. Hence, we have given the one mole of the water in the problem. =6.023×1024 electron. Hence the total number of electrons present in 18mL water is 6.023×1024.