Topic 7: Stoichiometry Part 1
10 Questions
| Total Attempts: 274
This will be your seventh formal assessment. Please answer this by saturday midnight.
Questions and Answers
- 1.How many molecules of water are there in 36.0 grams of the substance?
- A.
6.0 X 10^23
- B.
1.2 X 10^24
- C.
2.8X 10^23
- D.
3.2 X 10^21
- E.
1.8 X 10^24
- 2.Molar Mass of glucose (C6H12O6) in grams per mole?
- A.
340.0
- B.
180.0
- C.
110.0
- D.
78.0
- E.
44.0
- 3.Molar Mass of glucose (CO2) in grams per mole?
- A.
340.0
- B.
180.0
- C.
110.0
- D.
78.0
- E.
44.0
- 4.What is the molar mass of H2 i in grams per mole
- A.
15.0
- B.
2.0
- C.
4.0
- D.
5.2
- E.
3.5
- 5.What is the molar mass of NO2 in grams per mole
- A.
16.2
- B.
46.0
- C.
44.0
- D.
13.1
- E.
None of the above
- 6.What is the molar mass of benzene C6H6 ?( in grams per mole)
- A.
44.0
- B.
33.1
- C.
57.2
- D.
46.9
- E.
78.0
- 7.1.8 X 10^24 atoms of sodium contains approximately how many grams of this substance?
- A.
83
- B.
69
- C.
17
- D.
11
- E.
23
- 8.6.02 X 10^23 is known as
- A.
Charles' number
- B.
Irrational number
- C.
Avogadros's number
- D.
Boyle's law
- E.
None of the above
- 9.What is the molar mass of NH3? ( in grams per mole)
- A.
13
- B.
14
- C.
15
- D.
17
- E.
20
- 10.What is the molar mass of CH4
- A.
16 grams per mole
- B.
20 grams per mole
- C.
24 grams per mole
- D.
30 grams per mole
- E.
14 grams per mole
Questions: 8 | Attempts: 6904 | Last updated: Mar 21, 2022
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Sample QuestionMole ratios for a reaction are obtained from the
Stoichiometry is the quantitative interpretation of the amount moles of the matter in a chemical reaction. It is also known as the molar bookkeeping of chemistry which means, the study of chemistry and its uses in various fields...
Questions: 10 | Attempts: 1545 | Last updated: Mar 22, 2022
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Sample QuestionA mole ratio can be the ratio of -
Stoichiometry is the calculation that deals with the amount of reactants required and the amount of products formed during a chemical reaction. It is based on the Law of Conservation of Mass according to which the total mass...
Questions: 10 | Attempts: 1402 | Last updated: Mar 22, 2022
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Sample QuestionNa + Cl2 --> NaCl (unbalanced) How many moles of chlorine gas (Cl2) would react with 5.0 moles of sodium (Na) according to the following chemical equation?
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