WorksheetsWeek 1 Topic 1.3
Total questions: 10
Worksheet time: 30mins
What is the concentration, in percent by volume, of 15.3 mg of solute in 2.65 L of solution?
0.58% w/v
0.0058% w/v
5.8% w/v
0.00058% w/v
What is the concentration of a solution in parts per million if 0.02 grams of NaCl is dissolved in 1000 grams of water?
2 ppm
20 ppm
200 pm
0.2 ppm
What is the concentration of solution (in ppb) made up of 0.0005 grams of solute in 350 mL of solution?
1430 ppb
143 ppb
14.3 ppb
14300 ppb
A solution is made from 7 grams of solute dissolved in 1450 grams of solvent. What is the concentration of this solution in g/L?
48.3 g/L
4.83 g/L
0.483 g/L
4.83 mol/L
Convert 4.0ppm in %w/v
0.004 %w/v
0.0004 %w/v
0.04 %w/v
0.4 %w/v
In the equation 2 Al2O3 --> 4 Al + 3 O2, what is the mole ratio of aluminum to oxygen (aluminum is asked for, oxygen is given)?
10/6
3/4
4/3
2/3
In the reaction 2 H2 + O2 → 2 H2O what is the mole ratio of oxygen to water
1/2
2/1
3/4
4/3
How many moles of water can be produced if 8 moles H2 are used?
How many moles of hydrogen are needed to react with 2 moles of nitrogen?
