WorksheetsDiagnostic Term 3
Total questions: 10
Worksheet time: 6mins
Balance the following equation with the smallest whole number coefficients. Choose the answer that is the sum of the coefficients in the balanced equation. Do not forget coefficients of "one.
PtCl4 + XeF2 PtF6 + ClF + Xe
26
16
22
24
Balance the following equation using minimum integral coefficients:
NH3 + O2 NO2 + H2O
1
4
3
7
Calcium carbide, CaC2, is an important preliminary chemical for industries producing synthetic fabrics and plastics. CaC2 may be produced by heating calcium oxide with coke:
CaO + 3C CaC2 + CO
What is the amount of CaC2 which can be produced from the reaction of excess calcium oxide and 10.2 g of carbon? (Assume 100% efficiency of reaction for purposes of this problem.)
18.1g
28.4g
20.8g
19.8g
The number 6.02 x 1023 is referred to as
Avogadro's Number
Pascal Rule
Newton's Law
None of the above
How many mL of 17 M NH3 must be diluted to 500.0 mL to make a 0.75 M solution?
13mL
22mL
39mL
73mL
Silicon carbide, an abrasive, is made by the reaction of silicon dioxide with graphite.
SiO2 +3C SiC + 2CO
If 100 g of SiO2 and 100 g of C are reacted as far as possible, which one of the following statements will be correct?
111 g of SiO2 will be left over.
44 g of SiO2 will be left over.
82 g of C will be left over.
40 g of C will be left over
SiO2 +3C SiC + 2CO
in the reaction above, the number 2 in Silicion IV Oxide is a
Reactant
Product
Subscript
Superscript
The number of water molecules present in a drop of water weighing 0.018 gm is 6.023 ×
1026
1023
1020
1019
2KClO3, how many Oxygen atoms are in the compound Potassium Chlorate
2
4
6
8
Stoichiometry refers to the relationships between
Reactants
Product
Limiting Reactants
Reactant and Products
