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Worksheets( FA) Stoichiometric Relationships IB 1
Total questions: 21
Worksheet time: 42mins
Which mixture is homogeneous?
Steel
smoke
feijoada
Which mixture is heterogeneous?
Salt water
brass
oily water
What is the relationship between the Kelvin and Celcius scales
equal
C = K+273
C = 273 - K
K = C+273
Which is the state change from gas to solid
boiling
freezing
deposition
sublimation
Which gas law is incorrect
P is proportional to 1/V
P is proportional to T
V is proportional to T
T is proportional to 1/V
for PV = nRT what units does P have to be in?
Pa
kPa
atm
N/cm3
for PV = nRT what units does V have to be in?
cm3
dm3
m3
nm3
What can concentration not be measured in?
cm3
mol/dm3
g/dm3
ppm
how do you calculate percentage yield?
total mass of desired products / total mass of all products x 100
experimental volume / theoretical volume x 100
literature value - experimental value / literature value x 100
theoretical yield / experimental yield x 100
What is the molar mass of C6H12O6?
180.18
180.12
180.24
180.06
Using the following equation:
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(l)
How many moles of iron can be made from 6 moles H2?
4 moles Fe
6 moles Fe
9 moles Fe
2 moles Fe
2H2 + O2 → 2H2O
How many moles of water can be produced if 8 moles H2 are used?
4 moles
8 moles
16 moles
2 moles
Balance the following reaction :
CaC₂(s) + H₂O(l) --> C₂H₂(g) + Ca(OH)₂(aq)
1,2,2,2
1,2,1,1
2,1,1,1
2,1,2,1
For the Balanced Reaction: 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe; What is the Ratio of moles of MgO to moles Fe
3mol Mg / 2 mol Fe
2 mol Mg/ 3 mol Fe
1 mol Fe/ 2 mol Fe
3 mol MgO / 2 mol Fe
What is the first thing you must do to solve a stoichiometry problem?
Write a Balanced Equation
Panic
Write an Unbalanced Equation
Ask for help
How many grams are in 3.3 mol of Potassium Sulfide (K2S)?
363 g
454 g
238 g
132 g
What is the mole ratio in the following reaction:
2CO + O2 → 2CO2
2:1:2
1:1:1
1:2:1
Have no clue what a mole ratios is!!
How many particles are in 13.5 grams of Beryllium?
1.5 particles
9 particles
4x1023 particles
9x1023 particles
2CO + O2 −-> 2CO2
How many liters of carbon dioxide are produced from 10L of carbon monoxide?
10
20
1
5
In a lab, a scientist calculate he should produce 12.3 grams of product in his experiment. When he is finished collecting his product it weighs 10.1 grams. What is his percent yield?
82%
0.82%
10.1 %
100%
2Al + 3H2SO4 -> Al2(SO4)3 + 3H2How many grams of aluminum sulfate would be formed if 250g H2SO4 completely reacted with aluminum?
0.85 g
290 g
450 g
870 g
