BARU
Ukuran huruf
Lembar kerjaQAM 3 Review
Total soal: 20
Worksheet time: 3600secs
Consider the following equation;
2C2H6 + O2 --> 4CO2 + 6H2O
When 4 mol of C2H6 are burned, the number of moles of CO2 produced will be
2 mol
6 mol
7 mol
8 mol
The percent by mass of nitrogen in NH₄NO₃ (GFM = 80 g/mol) is closest to
Which statement defines the temperature of a sample of matter?
Temperature is a measure of the total electromagnetic energy of the particles.
Temperature is a measure of the total thermal energy of the particles.
Temperature is a measure of the average potential energy of the particles.
Temperature is a measure of the average kinetic energy of the particles.
A rigid cylinder with a movable piston contains a sample of hydrogen gas. At 330. K, this sample has a pressure of 1.48 atm and a volume of 3.50. L. What is the volume of this sample at STP?
A real gas behaves most like an ideal gas under the conditions of
low temperature and high pressure
high temperature and high pressure
low temperature and low pressure
high temperature and low pressure
Which chemical equation represents a conservation of atoms?
2Fe + 2O2 --> Fe2O3
2Fe + 3O2 --> Fe2O3
4Fe + 2O2 --> 2Fe2O3
4Fe + 3O2 --> 2Fe2O3
What is the amount of energy needed to vaporize 40.0 grams of water at 100oC and 1 atm?
1,810,000 J
90,400 J
2,260 J
418 J
Object A at 40ºC and object B at 80ºC are placed in contact with each other. Which statement describes the heat flow between the objects?
Heat flows from object A to object B
Heat flows from object B to object A
Heat flows in both directions between the objects
No heat flow occurs between the objects
What is the gram-formula mass of Fe(NO3)3
146 g/mol
194 g/mol
214 g/mol
242 g/mol
What is the number of moles of CO2 in a 220-gram sample?
0.20 mol
5.0 mol
15 mol
44 mol
Which graph best shows the relationship between the pressure of a gas and its temperature at constant volume?
What is the total number of Joules of heat that must be absorbed to raise the temperature of 10 grams of water from 20oC to 30oC?
42 J
84 J
420 J
1680 J
What is the minimum amount of heat required to completely melt 20.0 grams of ice at its melting point?
20.0 J
83.6 J
6,680 J
45,200 J
What is the total mass in grams of 0.75 mole of SO2?
16 g
24 g
32 g
48 g
Given the balanced equation representing a reaction:
CaO(s) + CO2(g) --> CaCO3(s) + heat
What is the total mass of CaO(s) that reacts completely with 88 grams of CO2(g) to produce 200 grams of CaCO3(s)?
56 g
88 g
112 g
288 g
Which temperature is equal to 20 K?
-253oC
-293oC
253oC
293oC
Refer to the image. The molecular formula and the empirical formula for this hydrocarbon are
C5H10 and CH2
C5H10 and CH3
C4H8 and CH2
C4H8 and CH3
What is the empirical formula of a compound with the molecular formula N2O4?
NO
NO2
N2O
N2O3
