Homework Answers
As water is evaporated, so liquid converts into gas molecules as
the energy required for converting into gas molecules is absorbed
from remaining water molecules, so remaining water cools
of due to loss of energy. Henc statement 1 is correct.
statement 3 is also true as evaporation is endothermic
process.
statement 2 is false as explained above , the temperature if water
decreases as it looses heat .
answer B option.
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Which of the following statements is false? O Apuddle of water cools down as it evaporates....
(17)can anyone solve question 17 Question 17 Which of the statements regarding water is false? O...
(17)can anyone solve question 17
Question 17 Which of the statements regarding water is false? O Hydrogen bonds are weaker than covalent bonds. O Liquid water is more dense than solid water. O Covalent bonds and hydrogen bonds are broken when water vaporizes. O Energy must be absorbed in order to break down the crystal lattice of ice to a liquid. All of the statements are true. Question 18 Which of the following compounds would be expected to form intermolecular...
Which one of the following processes is endothermic? Water freezes to form ice. O Propane gas...
Which one of the following processes is endothermic? Water freezes to form ice. Propane gas burns in a gas grill. Water evaporates from your skin after stepping out of the shower. Steam condenses to liquid water. Liquid sodium freezing to a solid.
Question 6 1 pts Which one of the following processes is endothermic? O Steam condenses to...
Question 6 1 pts Which one of the following processes is endothermic? O Steam condenses to liquid water. O Propane gas burns in a gas grill. O Liquid sodium freezing to a solid O Water evaporates from your skin after stepping out of the shower O Water freezes to form ice.
Which of the following statements is true? A. the evaporation of sweat is an endothermic process...
Which of the following statements is true? A. the evaporation of sweat is an endothermic process in which ?H > 0 B. all combustion reactions are exothermic processes in which ?H > 0 C. it takes more thermal energy to raise the temperature of 1g of metal than of 1g of water D. Hess's Law is an extension of the Law Of Multiple Proportions E. the freezing of water to form ice is an endothermic process in which ?H...
13. Indicate whether the following statements are true or false. If false, correct the statement so...
13. Indicate whether the following statements are true or false. If false, correct the statement so that it is true. a. A change in enthalpy for exothermic chemical reactions is negative. b. An endothermic reaction is one in which enthalpy is absorbed by the system from the surroundings. c. Condensation of water vapor is an example of an endothermic process. d. Heat, q, and enthalpy, AH, are state functions, meaning they depend on the path taken, and q = AH....
Ice cools down a drink because the ice is colder than the drink and heat flows...
Ice cools down a drink because the ice is colder than the drink and heat flows into the ice cubes. heat is absorbed from the drink to melt the ice cubes. The heat of fusion of the fusion of the ice is higher than the heat of fusion of the water. Both A and B are correct. The absorption of light energy by green plants to synthesize starches is endothermic. Exothermic. isothermic. All of the above If the temperature of...
15. When water evaporates it is an endothermic process. The balanced equation is written as follows:...
15. When water evaporates it is an endothermic process. The balanced equation is written as follows: H200) H2O(g) AHrxn = 44.10 kJ What is the minimum mass of water (in grams) which has to evaporate to absorb 175 kJ of heat?
Which of the following statements is incorrect? Which of the following statements is incorrect? Select one: O a. En...
Which of the following statements is incorrect?
Which of the following statements is incorrect? Select one: O a. Enthalpy is a state function. O b. The value of q is positive when heat flows into a system from the surroundings. OC. Internal energy is a state function. O d. Heat flows from a system into the surroundings in an endothermic process. e. The value of q is positive in an endothermic process.
Which of the following statements is FALSE? O When a substance melts, some - but not...
Which of the following statements is FALSE? O When a substance melts, some - but not all-of the intermolecular forces are disrupted O When a substance evaporates, all of the intermolecular forces are disrupted O A compound with stronger intermolecular forces will have a higher boiling point The enthalpy of sublimation is less than the enthalpy of vaporization but more than the enthalpy of fusion O The enthalpy of vaporization for a compound is greater than the enthalpy of fusion...
Considering the phase diagram shown below for an unspecified substance, which of the following statements is true...
Considering the phase diagram shown below for an unspecified substance, which of the following statements is true? Liq Pressure Temperature O Process M corresponds to evaporation It is not possible to find the solid and gas in equilibrium at any temperature. ooooo The point labeled P is the critical point. The density of the liquid is less than the density of the solid When the solid and liquid are at equilibrium, process N stops completely
(17)can anyone solve question 17
Question 17 Which of the statements regarding water is false? O Hydrogen bonds are weaker than covalent bonds. O Liquid water is more dense than solid water. O Covalent bonds and hydrogen bonds are broken when water vaporizes. O Energy must be absorbed in order to break down the crystal lattice of ice to a liquid. All of the statements are true. Question 18 Which of the following compounds would be expected to form intermolecular...
Which one of the following processes is endothermic? Water freezes to form ice. Propane gas burns in a gas grill. Water evaporates from your skin after stepping out of the shower. Steam condenses to liquid water. Liquid sodium freezing to a solid.
Question 6 1 pts Which one of the following processes is endothermic? O Steam condenses to liquid water. O Propane gas burns in a gas grill. O Liquid sodium freezing to a solid O Water evaporates from your skin after stepping out of the shower O Water freezes to form ice.
13. Indicate whether the following statements are true or false. If false, correct the statement so that it is true. a. A change in enthalpy for exothermic chemical reactions is negative. b. An endothermic reaction is one in which enthalpy is absorbed by the system from the surroundings. c. Condensation of water vapor is an example of an endothermic process. d. Heat, q, and enthalpy, AH, are state functions, meaning they depend on the path taken, and q = AH....
Ice cools down a drink because the ice is colder than the drink and heat flows into the ice cubes. heat is absorbed from the drink to melt the ice cubes. The heat of fusion of the fusion of the ice is higher than the heat of fusion of the water. Both A and B are correct. The absorption of light energy by green plants to synthesize starches is endothermic. Exothermic. isothermic. All of the above If the temperature of...
15. When water evaporates it is an endothermic process. The balanced equation is written as follows: H200) H2O(g) AHrxn = 44.10 kJ What is the minimum mass of water (in grams) which has to evaporate to absorb 175 kJ of heat?
Which of the following statements is incorrect?
Which of the following statements is incorrect? Select one: O a. Enthalpy is a state function. O b. The value of q is positive when heat flows into a system from the surroundings. OC. Internal energy is a state function. O d. Heat flows from a system into the surroundings in an endothermic process. e. The value of q is positive in an endothermic process.
Which of the following statements is FALSE? O When a substance melts, some - but not all-of the intermolecular forces are disrupted O When a substance evaporates, all of the intermolecular forces are disrupted O A compound with stronger intermolecular forces will have a higher boiling point The enthalpy of sublimation is less than the enthalpy of vaporization but more than the enthalpy of fusion O The enthalpy of vaporization for a compound is greater than the enthalpy of fusion...
Considering the phase diagram shown below for an unspecified substance, which of the following statements is true? Liq Pressure Temperature O Process M corresponds to evaporation It is not possible to find the solid and gas in equilibrium at any temperature. ooooo The point labeled P is the critical point. The density of the liquid is less than the density of the solid When the solid and liquid are at equilibrium, process N stops completely
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