Answer:
I think A.
Explanation:I say A because of the substance melting the quicking does have the highest melting point because its the highest.
Block and tackle d is the best answer
A pie graph is the graph used to show how a part of something relates to the whole.
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>
