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Question 1 of 15
1. Question
Select all that apply. Iron (Fe) is best described as:
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Question 2 of 15
2. Question
Perform the following calculation to the correct number of significant figures.
(1715.2 ÷ 23.22) + 1.87
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Question 3 of 15
3. Question
To what volume should you dilute 120 mL of a 5.22 M CuCl2 solution so that its concentration is 2.50 M in CuCl2? Be sure to round your answer to the correct number of significant figures.
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Question 4 of 15
4. Question
What type of bond is formed between atoms of strontium (Sr) and yttrium (Y)?
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Question 5 of 15
5. Question
What type of bond exists between boron and hydrogen in BH3?
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Question 6 of 15
6. Question
What type of bond exists between rubidium (Rb) and sulfur (S) in Rb2S?
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Question 7 of 15
7. Question
How many sigma (σ) and pi (π) bonds are there in the molecule shown below?
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Question 8 of 15
8. Question
What type of bond exists between hydrogen (H) and bromine (Br) in hydrogen bromide (HBr)?
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Question 9 of 15
9. Question
Using the table of electronegativity values below, calculate the polarity of a bond between phosphorus and chlorine. Be sure to round your answer to the correct number of significant figures.
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Question 10 of 15
10. Question
What state of matter is characterized by a fixed volume but not a fixed shape?
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Question 11 of 15
11. Question
A carbonated beverage is best classified as:
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Question 12 of 15
12. Question
Balance the following chemical equation for the complete combustion of benzene, C6H6, by adding the appropriate coefficients in the boxes. All boxes must have a number.
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C6H6(g) + O2(g) ➛ CO2(g) + H2O(g)
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Question 13 of 15
13. Question
Balance the following chemical equation by adding the appropriate coefficients in the boxes. All boxes must have a number.
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HCl(aq) + MnO2(g) ➛ MnCl2(aq) + H2O(l) + Cl2(g)
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Question 14 of 15
14. Question
Which of the following measurements has 4 significant figures?
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Question 15 of 15
15. Question
From a sample of a pure gas of unknown identity (“gas A”) one can obtain two different gases, each of which is a pure substance. Using only this information, it can be said with certainty that:
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