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I need a correction for the wrong ones please
3. Determine the oxidation state of carbon in carbon dioxide. A) +4 B) -4 C) +2 D) -2 4. Determine the oxidation state of chlorine in KCIO4. A) +1 B) +7 C) +5 D) -2 What element is undergoing oxidation (if any) in the following reaction? CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) AC B) H C) O D) this is not redox reaction 6. What is oxidizing agent in the following reaction? 2Al + 3CuSO4 → Al2(SO4)3 + 3Cu Α) ΑΙ BS C) O D) Cu 7. Which of the following statements about gases is incorrect according to Kinetic Molecular Theory of Gases? A) Molecules move randomly in straight lines in all directions and at various speeds. B) The average kinetic energy of a molecule is inversely proportional to the absolute temperature. C) When molecules collide with each other, the collisions are elastic. D) Gases are composed of molecules whose size is negligible compared to the average distance between them. 8. Which of the following sentences describe gas? A) definite volume, takes shape of the container, molecules are packed closely together B) fill the entire container, takes shape of the container, molecules are far apart C) definite volume, definite shape, molecules are packed closely together D) none of the above describe gas 9. Hydrogen gas exerts a pressure of 866 mmHg in a container. What is this pressure in atmospheres? 1 atm = 760 mmHg A) 0.217 atm B) 0.613 atm C 1.14 atm D) 1.63 atm E) 4.60 atm
3. Determine the oxidation state of carbon in carbon dioxide. A) +4 B) -4 C) +2 D) -2 4. Determine the oxidation state of chlorine in KCIO4. A) +1 B) +7 C) +5 D) -2 What element is undergoing oxidation (if any) in the following reaction? CH4(g) + 2O2(g) → CO2(g) + 2H2O(g) AC B) H C) O D) this is not redox reaction 6. What is oxidizing agent in the following reaction? 2Al + 3CuSO4 → Al2(SO4)3 + 3Cu Α) ΑΙ BS C) O D) Cu 7. Which of the following statements about gases is incorrect according to Kinetic Molecular Theory of Gases? A) Molecules move randomly in straight lines in all directions and at various speeds. B) The average kinetic energy of a molecule is inversely proportional to the absolute temperature. C) When molecules collide with each other, the collisions are elastic. D) Gases are composed of molecules whose size is negligible compared to the average distance between them. 8. Which of the following sentences describe gas? A) definite volume, takes shape of the container, molecules are packed closely together B) fill the entire container, takes shape of the container, molecules are far apart C) definite volume, definite shape, molecules are packed closely together D) none of the above describe gas 9. Hydrogen gas exerts a pressure of 866 mmHg in a container. What is this pressure in atmospheres? 1 atm = 760 mmHg A) 0.217 atm B) 0.613 atm C 1.14 atm D) 1.63 atm E) 4.60 atm