If you have 1.5 moles of copper (Cu), how many grams is that?
3 points
3
Question 2
2.
Using the following chemical equation, how many grams of phosphorus are needed to produce 25.3 grams of diphosphorus pentaoxide?
P + O2 → P2O5
2 points
2
Question 3
3.
2.7 x 1025 molecules of MnO equals how many moles?
5 points
5
Question 4
4.
Match the chemical reactions with their respective type
NaOH + HCl --> NaCl + H2O
MgCl2 + Zn --> ZnCl2 + Mg
A + B --> AB
A + BC --> AC + B
2H2O --> 2H2 + O2
CxHy + O2 --> CO2 + H2O
H2 + I2 --> 2HI
C6H12O6 + 6O2 --> 6CO2 + 6 H2O
AB + CD --> AD + CB
AB --> A + B
Synthesis
Decomposition
Single Replacement
Double Replacement
Combustion
2 points
2
Question 5
5.
Which of the following can be correctly said about 1.0 mole sample of Ag and 1.0 mole sample of Au? Select all that apply.
2 points
2
Question 6
6.
When 8 moles of aluminum react according to the reaction below, ______ moles of copper will be produced.
2Al + 3CuSO4 --> Al2(SO4)3 + 3Cu
2 points
2
Question 7
7.
On a hot day, a small, well-insulated building is significantly colder than the outside. A solid metal door leads to the outside, and a person placing their hand nearby but not touchng the door can feel warmth from the door. How does the heat from outside make it into the hand?
2 points
2
Question 8
8.
What is the melting point of the substance?
2 points
2
Question 9
9.
Match the following masses with the number of moles.
Draggable item
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Corresponding Item
10.0 g of NaOH
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1 mole
4.04 g of H2
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2 moles
23 g of Na
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0.5 moles
16.0 g of O2
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0.25 moles
1 point
1
Question 10
10.
Balancing the equation; make sure you show your work.
2 points
2
Question 11
11.
When heat is added to boiling water, the temperature of the boiling water
2 points
2
Question 12
12.
In a greenhouse, glass acts as a one-way valve, letting
3 points
3
Question 13
13.
What is wrong with this set up?
2 points
2
Question 14
14.
Endothermic reactions result in: (Select all that apply)
3 points
3
Question 15
15.
Using the following chemical reaction, determine how many moles of Mg(OH)2 will be produced if you start with 12 moles of H2O.
Mg + H2O → Mg(OH)2 + H2
3 points
3
Question 16
16.
P4 + Cl2 → PCl3
Calculate how many grams of phosphorus that reacted if 250g of phosphorus trichloride, PCl3 is produced by the above reaction.
2 points
2
Question 17
17.
Why does warm air rise?
5 points
5
Question 18
18.
Categorize the layers of the earth by their state.
Outer Core
Inner Core
Crust
Asthenosphere
Mantle
Solid
Liquid
3 points
3
Question 19
19.
What causes the plates in the lithosphere to move?
2 points
2
Question 20
20.
What trend does the NASA graph above show?
2 points
2
Question 21
21.
Using your graph reading skills, watch the animation. Based on this animated graph, what factor corresponds closely to the increase in Earth's average temperature since 1880?
4 points
4
Question 22
22.
Why are China and India's carbon dioxide emissions increasing? (Select all that apply)
2 points
2
Question 23
23.
Without the greenhouse effect, Earth would be _________ to support life.
2 points
2
Question 24
24.
Which of the following is NOT evidence of global warming? Select all that apply
2 points
2
Question 25
25.
Two metals of equal mass but different specific heat capacities are subjected to the same amount of heat. Which will undergo the smallest change in temperature?
2 points
2
Question 26
26.
Which of the following is true for temperature?
2 points
2
Question 27
27.
A hot metal sinker of mass 68.2 grams at 99.8°C is dropped into a cup containing 125 mL of water at 22.4°C. The final temperature in the cup is 31.0°C. What is the specific heat capacity of the metal? Submit/show your work.
3 points
3
Question 28
28.
Consider the following heating curve for water and answer the following questions:
a. Describe as fully as you can what is happening for each section of the curve (for example, what is going on between A and B, B and C, etc.