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HF QUESTION 4 If AH = 25 J for a certain process, that process O releases...
NEED ANSWERS ASAP PLZ QUESTION 4 AH° = -560 kJ Look at this reaction: 2H2(g) +...
NEED ANSWERS ASAP PLZ
QUESTION 4 AH° = -560 kJ Look at this reaction: 2H2(g) + O2(g) --> 2H20(1) Which one of the following statements is true? O Heat is absorbed during the reaction O The reaction is endothermic O The enthalpy change is positive O This reaction is exothermic QUESTION 3 If AH = 25 J for a certain process, that process O releases heat O is exothermic. O is endothermic. O can't tell
QUESTION 4 Which of the following is an acid? NaOH HNO3 OLIOH O NH3 QUESTION 5...
QUESTION 4 Which of the following is an acid? NaOH HNO3 OLIOH O NH3 QUESTION 5 The sign of AH for the process Heat + 2HgO --> 2Hg + O 2 is negative, and the process is endothermic. positive, and the process is exothermic. O positive, and the process is endothermic. O negative, and the process is exothermic.
NEED ANSWERS ASAP PLZ QUESTION 5 H2 and F2 react according to the following equation, forming...
NEED ANSWERS ASAP PLZ
QUESTION 5 H2 and F2 react according to the following equation, forming HF. H2 + F2 --> 2HF (AH° = -271 kJ/mol rxn) If H2(g) and F2(g) were reacted in a calorimeter, the reaction that occurred would be: O exothermic, and the water temperature in the calorimeter temperature would rise. O endothermic, and the water temperature in the calorimeter temperature would rise. O endothermic, and the water temperature in the calorimeter temperature would fall. O exothermic,...
10 points Save Answer Question 2 while AH for an exothermic process is AH for an...
10 points Save Answer Question 2 while AH for an exothermic process is AH for an endothermic process is zero, positive positive, negative positive, zero negative, positive zero, negative
QUESTION 3 When pure hydrogen and fluorine change into HF, the reaction releases heat. What does...
QUESTION 3 When pure hydrogen and fluorine change into HF, the reaction releases heat. What does this tell you about the reaction? the formation of pure hydrogen and fluorine from HF would absorb heat the formation of pure hydrogen and fluorine from HF would be exothermic the backward reaction would be exothermic QUESTION 4 250.0 g of H20 at 30.0 °C is heated to 65.0 °C. How many kJ of heat did it gain from the environment? The specific heat,...
35. Consider the following specific heats of metals. Metal Specific Heat Copper 0.385 J/(g. °C) Cobalt0.418...
35. Consider the following specific heats of metals. Metal Specific Heat Copper 0.385 J/(g. °C) Cobalt0.418 J/(g °C) Chromium 0.447 J/(g. °C) Gold Silver0.237 J/(g. °C) 0.129 J/(g.°C) If the same amount of heat is added to 100-g samples of each of the metals, which are all at the same temperature, which metal will reach the lowest temperature? a. copper b. cobalt c chromium d. gold e. silver x 36. The sign of AH for the process 12(s)- 12(3) is...
Verizon LTE 10:41 PM Done 2 of 2 Instructions ach question carefully and choose the correct answe...
Verizon LTE 10:41 PM Done 2 of 2 Instructions ach question carefully and choose the correct answer Question 2 2 pts What is the change in heat when 2 moles of NO reacts according to the following equation? 2NO(g) + 02(g)-+2NO2(g) ΔΗ -1 14.6 kJ ○ +229.2k) ○ +114.6k) 229.2 k 114.6k Next » Question 1 2 pts When an ice cube melts to form liquid water, is the change in enthalpy of the ice cube (the system) positive or...
NEED HELP ASAP 1-4 and has a question. 1) A chemical reaction that releases heat to the surroundings is said to be _...
NEED HELP ASAP 1-4
and has a question. 1) A chemical reaction that releases heat to the surroundings is said to be _AH at constant pressure. A) endothermic, positive B) endothermic, negative C) exothermic, positive D) exothermic, neutral E) exothermic, negative kJ of heat are transferred when 161.8 2) The value of AHº for the reaction below is -72 kJ. g of HBr is formed in this reaction. H2(g) + Br2 (g) → 2HBr (g) A) 54 B) 36 C)...
General Chemistry UCHM 140-60 Name Test #3:Chapters 5 and I0 Bonus: In what US city wo...
General Chemistry UCHM 140-60 Name Test #3:Chapters 5 and I0 Bonus: In what US city wo ld youjind Disneyland? (HİNT I pess that is why Disney male she move." "Angels О.he MULTIPLE CHOICE Choose the letter of the answer choice that best completes the statement or answers the question and place your selection in the space provided in the right hand margin.(1 point each) 1) Which one of the following is an exothermic process? 1) A) boiling soup B) ice...
In a certain process, a sample of gas does 950 J of work and releases 500...
In a certain process, a sample of gas does 950 J of work and releases 500 J of heat into the environment. What is the resulting change of the internal energy ∆E of the gas sample in this process? (A) −1450 J (B) +1450 J (C) +450 J (D) −450 J (E) −500 J
NEED ANSWERS ASAP PLZ
QUESTION 4 AH° = -560 kJ Look at this reaction: 2H2(g) + O2(g) --> 2H20(1) Which one of the following statements is true? O Heat is absorbed during the reaction O The reaction is endothermic O The enthalpy change is positive O This reaction is exothermic QUESTION 3 If AH = 25 J for a certain process, that process O releases heat O is exothermic. O is endothermic. O can't tell
QUESTION 4 Which of the following is an acid? NaOH HNO3 OLIOH O NH3 QUESTION 5 The sign of AH for the process Heat + 2HgO --> 2Hg + O 2 is negative, and the process is endothermic. positive, and the process is exothermic. O positive, and the process is endothermic. O negative, and the process is exothermic.
NEED ANSWERS ASAP PLZ
QUESTION 5 H2 and F2 react according to the following equation, forming HF. H2 + F2 --> 2HF (AH° = -271 kJ/mol rxn) If H2(g) and F2(g) were reacted in a calorimeter, the reaction that occurred would be: O exothermic, and the water temperature in the calorimeter temperature would rise. O endothermic, and the water temperature in the calorimeter temperature would rise. O endothermic, and the water temperature in the calorimeter temperature would fall. O exothermic,...
10 points Save Answer Question 2 while AH for an exothermic process is AH for an endothermic process is zero, positive positive, negative positive, zero negative, positive zero, negative
QUESTION 3 When pure hydrogen and fluorine change into HF, the reaction releases heat. What does this tell you about the reaction? the formation of pure hydrogen and fluorine from HF would absorb heat the formation of pure hydrogen and fluorine from HF would be exothermic the backward reaction would be exothermic QUESTION 4 250.0 g of H20 at 30.0 °C is heated to 65.0 °C. How many kJ of heat did it gain from the environment? The specific heat,...
35. Consider the following specific heats of metals. Metal Specific Heat Copper 0.385 J/(g. °C) Cobalt0.418 J/(g °C) Chromium 0.447 J/(g. °C) Gold Silver0.237 J/(g. °C) 0.129 J/(g.°C) If the same amount of heat is added to 100-g samples of each of the metals, which are all at the same temperature, which metal will reach the lowest temperature? a. copper b. cobalt c chromium d. gold e. silver x 36. The sign of AH for the process 12(s)- 12(3) is...
Verizon LTE 10:41 PM Done 2 of 2 Instructions ach question carefully and choose the correct answer Question 2 2 pts What is the change in heat when 2 moles of NO reacts according to the following equation? 2NO(g) + 02(g)-+2NO2(g) ΔΗ -1 14.6 kJ ○ +229.2k) ○ +114.6k) 229.2 k 114.6k Next » Question 1 2 pts When an ice cube melts to form liquid water, is the change in enthalpy of the ice cube (the system) positive or...
NEED HELP ASAP 1-4
and has a question. 1) A chemical reaction that releases heat to the surroundings is said to be _AH at constant pressure. A) endothermic, positive B) endothermic, negative C) exothermic, positive D) exothermic, neutral E) exothermic, negative kJ of heat are transferred when 161.8 2) The value of AHº for the reaction below is -72 kJ. g of HBr is formed in this reaction. H2(g) + Br2 (g) → 2HBr (g) A) 54 B) 36 C)...
General Chemistry UCHM 140-60 Name Test #3:Chapters 5 and I0 Bonus: In what US city wo ld youjind Disneyland? (HİNT I pess that is why Disney male she move." "Angels О.he MULTIPLE CHOICE Choose the letter of the answer choice that best completes the statement or answers the question and place your selection in the space provided in the right hand margin.(1 point each) 1) Which one of the following is an exothermic process? 1) A) boiling soup B) ice...
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