Unit 1 โ Fundamentals of Chemistry
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Unit 1 โ Fundamentals of Chemistry
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Question 1 of 13
1. Question
Molar mass is usually expressed in grams. Which one of the following is molar mass of O2 in amu?
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Question 2 of 13
2. Question
How many numbers of moles are equivalent to 8 grams of CO2?
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Question 3 of 13
3. Question
Which one of the following pairs has the same mass?
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Question 4 of 13
4. Question
Which one of the following pairs has the same number of ions?
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Question 5 of 13
5. Question
The molar mass of H2S04 is
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Question 6 of 13
6. Question
Which one of the following element is found in most abundance in the earthโs crust?
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Question 7 of 13
7. Question
The third abundant gas found in the atmosphere is:
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Question 8 of 13
8. Question
One amu (atomic mass unit) is equivalent to:
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1.66 x 10-24 g
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Question 9 of 13
9. Question
Industrial chemistry deals with the manufacturing of compounds:
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Question 10 of 13
10. Question
Which one of the following can be separated by physical means?
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Question 11 of 13
11. Question
The most abundant element occurring in the oceans is:
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Question 12 of 13
12. Question
The mass of one molecule of water is:
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Question 13 of 13
13. Question
All of the followings are tri-atomic molecule except:
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H2