Stoichiometry
1) Gve your Name, Surname and Grade
Your answer
2) Give your school eg. MHS (for Muizenberg High School)
Your answer
3) Stoichiometry concerns itself with ratios of reactants and products in a reaction. When burning C to CO2 this ratio is...
2 points
2:1
1:1
1:2
2:2
4) 1 Mole of any element has mass of...
2 points
Atomic number in g
Atomic mass in kg
Atomic number in kg
Atomic mass in g
5) 1 mole of any gas occupies how much volume at STP?
2 points
22,4 litres
6.02 litres
Avogadro's number of litres
1 litre
6) STP involves Standard temperature and pressure. These are respectively...
2 points
273K/0C and 101300 Pa
101kPa and 0 Centigrade
273K and 101kPa
0C and 0Pa
7) 1 mole of CO2 or 22,4 litres of CO2 has a mass of...
2 points
12g
32g
44g
None of the above
8) 1kg of C represent how many moles?
2 points
1 mol
12 mol
83,3 mol
1866,66 mol
9) What percentage of the air is CO2?
2 points
0.4 %
0.04 %
80 %
20 %
10) if we burn 1 kg of C to produce 1866 litres of CO2 gas and this represents 0.04% of air, then what is the volume of air normally containing 1866 litres of CO2?
2 points
466666 litres
100/0,04 x 1866 litres
24,3 classrooms of air
All of the above
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