WorksheetsAnalytical Chemistry chapter 3
Total questions: 11
Worksheet time: 2hrs 50mins
What definition does "the average mass of one atom of the element compared to 1/12 of the mass of one atom of carbon-12" represent?
Relative atomic mass, Ar
Relative molecular mass, Mr
Relative formula mass,Mr
Relative mass, Ar
What is the relative molecular mass of water, H2O?
16
18
8
6
In the following image, what does 12.01 represent?
Atomic number
Element symbol
Atomic mass
Proton number
What is the correct value of Avogadro's number?
6.023 x 1022
6.023 x 1023
6.023 x 10-22
6.023 x 10-23
What is the significance of Avogadro's number?
to determine if the sample is correct or not
To quantify an amount of substance in a sample
Just cause....
To quantify the amount of mass in a sample
Is this the correct relationship between moles?
True
False
How many mole of O2 are there in 0.16 g of oxygen molecules.
0.005
0.05
0.001
0.01
What are the common apparatus used for simple titration?
Pipette and burette ONLY
Pipette, burette and graduated flask ONLY
Pipette and graduated flask ONLY
Burette and graduated flask ONLY
Name the following parts of the apparatus shown shown. (more than one answer)
Pipette
Pipette filler
Burette
Graduated flask
What is the use of a pipette?
It gives an estimated volume of liquid
It is efficient in making titration faster
It does its job quickly
It delivers a fixed volume of liquid
How should we read the burette reading for a colorless solution?
Observe the lower meniscus of the solution
Observe the upper meniscus of the solution
