0.753 is the answer for this question
10^(-0.123)=0.753
The drug only works by chemical reaction. The drug reacts with a target molecule which for example could be inhibiting an enzyme involved in the bio-synthetic pathway of cholesterol (statin, cholesterol drug) or cell wall synthesis of a bacterium (antibiotic).
Answer:
The mass of nickel is 48μg
Explanation:
Parts per billion is a way to describe small concentrations and is defined as the ratio between μg of solute and kg of solvent.
If a solution of nickel in propanol is 20ppb, contains 20μg of nickel in 1 kg of propanol.
Thus, a sample of 2.4kg of propanol will contain:
2.4kg × (20μg nickel / 1kg) = 48μg nickel
<h3>The mass of nickel is 48μg</h3>