The standard molar heat of formation of water is –285.8 kJ/mol. (b) Why is the magnitude of this value so much larger than the heat of vaporization of water (ΔH°vap = 41 kJ/mol)? Choose one: A. More energy is needed to break attractive forces between w
i need help with this a little bit. The standard molar heat of formation of water is –285.8 kJ/mol.
b) Why is the magnitude of this value so much larger than the heat of vaporization of water (ΔH°vap = 41 kJ/mol)?
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The standard molar heat of formation of water is –285.8 kJ/mol. (b) Why is the magnitude of this value so much larger than the heat of vaporization of water (ΔH°vap = 41 kJ/mol)? Choose one: A. More energy is needed to break attractive forces between w
(b) Why is the magnitude of this value so much larger than the heat of vaporization...
(b) Why is the magnitude of this value so much larger than the heat of vaporization of water (AH°vap = 41 kJ/mol)? * Choose one: A. Less energy is needed to form attractive forces between water molecules than to break H-H and O-O bonds and form H-O bonds. O B. More energy is needed to form attractive forces between water molecules than to break H-Hand O-O bonds and form H-O bonds. o C. Less energy is needed to break attractive...
ue significance of the negative sign associated with this value? Choose one: O A. Energy is...
ue significance of the negative sign associated with this value? Choose one: O A. Energy is absorbed from the surroundings during the reaction. O B. Energy is destroyed during the reaction. C. Energy is released into the surroundings during the reaction. O D. Energy is created during the reaction. (b) Why is the magnitude of this value so much larger than the heat of vaporization of water (AHvap - 41 kJ/mol)? Choose one: O A. More energy is needed to...
# 10/29/195 4% gui7666 1st attempt Part 1 (0.7 pt) See Periodic Table (a) What is...
# 10/29/195 4% gui7666 1st attempt Part 1 (0.7 pt) See Periodic Table (a) What is the significance of the negative sign associated with this value? Choose one: O A. Energy is absorbed from the surroundings during the reaction. O B. Energy is destroyed during the reaction. O C. Energy is released into the surroundings during the reaction. O D. Energy is created during the reaction. (b) Why is the magnitude of this value so much larger than the heat...
Part A: Draw the Lewis structures of all the molecules involved in the reaction: N2(g)+3H2(g)→2NH3(g) Part B: If the bond energy for the N≡N bond is 946 kJ/mol, how much energy is needed to break all...
Part A: Draw the Lewis structures of all the molecules involved in the reaction: N2(g)+3H2(g)→2NH3(g) Part B: If the bond energy for the N≡N bond is 946 kJ/mol, how much energy is needed to break all the bonds in 3.0 mol of nitrogen molecules? Part C: If the bond energy for the H−H bond is 432 kJ/mol, how much energy is needed to break all the bonds in 9 hydrogen gas? Part D: If the bond energy for the N=H...
3) The temperature of evaporation is much higher for water than for alcohol. Without knowing more...
3) The temperature of evaporation is much higher for water than for alcohol. Without knowing more about the chemistry of alcohol, which of the following is the most logical chemical explanation for this phenomenon A) Fewer hydrogen bonds form between alcohol molecules. As a result, less heat is needed for alcohol molecules to break away from solution and enter the air. B) Alcohol has a higher surface tension than water. This means that alcohol molecules can easily break away from...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has its own characteristic atom in which a. the atomic mass is constant. b. the atomic number is constant. c. the mass number is constant. d. Two of the above are correct. e. All of the above are correct. 2. Which of the following is not a trace element in the human body? a. iodine b. zinc c. iron d. calcium e. fluorine 3. A...
(b) Why is the magnitude of this value so much larger than the heat of vaporization of water (AH°vap = 41 kJ/mol)? * Choose one: A. Less energy is needed to form attractive forces between water molecules than to break H-H and O-O bonds and form H-O bonds. O B. More energy is needed to form attractive forces between water molecules than to break H-Hand O-O bonds and form H-O bonds. o C. Less energy is needed to break attractive...
ue significance of the negative sign associated with this value? Choose one: O A. Energy is absorbed from the surroundings during the reaction. O B. Energy is destroyed during the reaction. C. Energy is released into the surroundings during the reaction. O D. Energy is created during the reaction. (b) Why is the magnitude of this value so much larger than the heat of vaporization of water (AHvap - 41 kJ/mol)? Choose one: O A. More energy is needed to...
# 10/29/195 4% gui7666 1st attempt Part 1 (0.7 pt) See Periodic Table (a) What is the significance of the negative sign associated with this value? Choose one: O A. Energy is absorbed from the surroundings during the reaction. O B. Energy is destroyed during the reaction. O C. Energy is released into the surroundings during the reaction. O D. Energy is created during the reaction. (b) Why is the magnitude of this value so much larger than the heat...
3) The temperature of evaporation is much higher for water than for alcohol. Without knowing more about the chemistry of alcohol, which of the following is the most logical chemical explanation for this phenomenon A) Fewer hydrogen bonds form between alcohol molecules. As a result, less heat is needed for alcohol molecules to break away from solution and enter the air. B) Alcohol has a higher surface tension than water. This means that alcohol molecules can easily break away from...
e. 18 Test Your Knowledge MULTIPLE CHOICE: Choose the one best answer. 1. Each element has its own characteristic atom in which a. the atomic mass is constant. b. the atomic number is constant. c. the mass number is constant. d. Two of the above are correct. e. All of the above are correct. 2. Which of the following is not a trace element in the human body? a. iodine b. zinc c. iron d. calcium e. fluorine 3. A...
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