I would like to make sure about my answers and also sig figs , thank you
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I would like to make sure about my answers and also sig figs ,
thank you...
5. Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) →...
5.
Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g). You weigh out a 0.202 gram piece of metal and combine it with 62.2 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 48.51 g/mol, and you measure that the reaction absorbed 111 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting reactant? Enter your answer...
3 seperate questions i have been having trouble with Suppose you are investigating the reaction: M(s) + 2 HCl(aq)...
3 seperate questions i have been having trouble with
Suppose you are investigating the reaction: M(s) + 2 HCl(aq) - MC12(aq) + H2(g). You weigh out a 0.243 gram piece of metal and combine it with 63.1 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 46.62 g/mol, and you measure that the reaction absorbed 105 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting...
Question 3 1 pts A coffee cup calorimeter is prepared, containing 100.000 g of water (specific...
Question 3 1 pts A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity 4.184 J/g K) at initial temperature 80.000 C. A salt weighing 6.303 g is quickly added. The salt has a molar mass of 321.692 g/mol. The final temperature of the solution is 43.252 C. Assume no heat loss to the surroundings. Assume the specific heat capacity of the solution is equal to that of pure water, and that the mass of the...
please help me.I answered them, but not sure about my answers Since you are measuring pressure...
please help me.I answered them, but not sure about my answers
Since you are measuring pressure in mmHg, which numerical value of R should you us (enter the numerical value only, no units and use three significant figures)? 0.082 Question 2 1 pts Suppose you have a stoppered flask containing CO2 gas at room temperature and pressure. If the volume of your stoppered flask is 300.0 mL, the pressure in the room is 770. mm Hg, and the temperature in...
don't worry about trial 2. thank you. C. Heat of Solution of NH.NO Name Trial 2...
don't worry about trial 2. thank you.
C. Heat of Solution of NH.NO Name Trial 2 (if necessary) Trial 20.00 mL Water volume, 1* addition Water volume, 20 addition 20.00 mL 4.184 J/g °C Total volume of water added Mass of water Assume density is 1.00 g/mL Specific Heat of water Mass of NH.NO, Molar mass of NHNO; Moles of NH.NO, 0.7479 g Initial temperature of water 23.15°C Final temperature of water 21.85 °C ΔΤ Calculate the heat absorbed or...
How do I approach this? The temperature are in degrees Celcius btw. Thank you! Reaction 1:...
How do I approach this? The temperature are in degrees Celcius
btw. Thank you!
Reaction 1: The dissolving of solid sodium hydroxide in water. NaOH(s) ---> Nat(aq) + OH"(aq) + heat (x1 kJ) Reaction 2: The reaction of solid sodium hydroxide with dilute hydrochloric acid. NaOH(s) + H+ (aq) + Cl'(aq) ---> Nat(aq) + Cl(aq) + H2O + heat (x2 kJ) Reaction 3: The reaction of a sodium hydroxide solution with dilute hydrochloric acid solution. Na*(aq) + OH"(aq) + H+...
omework i 1 attempt left Check my work Enter your answer in the provided box. Calculate...
omework i 1 attempt left Check my work Enter your answer in the provided box. Calculate the heat released when 71.5 g of steam at 125.0°C is converted to water at 58.0°C. Assume that the specific heat of water is 4.184 J/g ° °C, the specific heat of steam is 1.99 J/g. °C, and AHÇap = 40.79 kJ/mol for water.
I would like the answer for two questions. question 29 and question 46 All of the...
I
would like the answer for two questions. question 29 and question
46
All of the above are correct. Question 46 (2 points) What is the initial pressure of a gas having an initial temperature of 90.5K, an initial volume of 40.3 L, a final pressure of 0.83 atm, a final temperature of 0.54 K and a final volume of 2.7 L O4.0 atm 1.3 atm 1.9 atm 0.074 uestion 47 (2 points) ✓ Saved The density of is 0.900...
D Question 5 2 pts Suppose 160 mL of 8.0 M NaOH(aq) is added to 167...
D Question 5 2 pts Suppose 160 mL of 8.0 M NaOH(aq) is added to 167 mL of 6.0 M HNO3(aq) to make a solution with a density of 1.1 g/mL and a specific heat of 4.1 J/gxK. If the initial temperature of both solutions is 295 K, what will be the final temperature (K)? Enter your answer as an integer. H(aq) + OH(aq) + H2O(1) AH° = -55.8 kJ/mol
My answer is wrong for the 6th time what am I doing wrong and how do...
My answer is wrong for the 6th time what am I doing wrong and
how do i do this
Enter your answer in the provided box. From the data below, calculate the total heat (in J) needed to convert 0.803 mol of gaseous ethanol at 300.0°C and 1 atm to liquid ethanol at 25.0°C and 1 atm: b.p. at 1 atm: 78.5°C AH®: 40.5 kJ/mol vap Cgas: 1.43 J/g.°C Cliquid: 2.45 J/g °C -4849|o1 J
5.
Question 2 1 pts Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g). You weigh out a 0.202 gram piece of metal and combine it with 62.2 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 48.51 g/mol, and you measure that the reaction absorbed 111 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting reactant? Enter your answer...
3 seperate questions i have been having trouble with
Suppose you are investigating the reaction: M(s) + 2 HCl(aq) - MC12(aq) + H2(g). You weigh out a 0.243 gram piece of metal and combine it with 63.1 mL of 1.00 M HCl in a coffee-cup calorimeter. If the molar mass of the metal is 46.62 g/mol, and you measure that the reaction absorbed 105 J of heat, what is the enthalpy of this reaction in kJ per mole of limiting...
Question 3 1 pts A coffee cup calorimeter is prepared, containing 100.000 g of water (specific heat capacity 4.184 J/g K) at initial temperature 80.000 C. A salt weighing 6.303 g is quickly added. The salt has a molar mass of 321.692 g/mol. The final temperature of the solution is 43.252 C. Assume no heat loss to the surroundings. Assume the specific heat capacity of the solution is equal to that of pure water, and that the mass of the...
please help me.I answered them, but not sure about my answers
Since you are measuring pressure in mmHg, which numerical value of R should you us (enter the numerical value only, no units and use three significant figures)? 0.082 Question 2 1 pts Suppose you have a stoppered flask containing CO2 gas at room temperature and pressure. If the volume of your stoppered flask is 300.0 mL, the pressure in the room is 770. mm Hg, and the temperature in...
don't worry about trial 2. thank you.
C. Heat of Solution of NH.NO Name Trial 2 (if necessary) Trial 20.00 mL Water volume, 1* addition Water volume, 20 addition 20.00 mL 4.184 J/g °C Total volume of water added Mass of water Assume density is 1.00 g/mL Specific Heat of water Mass of NH.NO, Molar mass of NHNO; Moles of NH.NO, 0.7479 g Initial temperature of water 23.15°C Final temperature of water 21.85 °C ΔΤ Calculate the heat absorbed or...
How do I approach this? The temperature are in degrees Celcius
btw. Thank you!
Reaction 1: The dissolving of solid sodium hydroxide in water. NaOH(s) ---> Nat(aq) + OH"(aq) + heat (x1 kJ) Reaction 2: The reaction of solid sodium hydroxide with dilute hydrochloric acid. NaOH(s) + H+ (aq) + Cl'(aq) ---> Nat(aq) + Cl(aq) + H2O + heat (x2 kJ) Reaction 3: The reaction of a sodium hydroxide solution with dilute hydrochloric acid solution. Na*(aq) + OH"(aq) + H+...
omework i 1 attempt left Check my work Enter your answer in the provided box. Calculate the heat released when 71.5 g of steam at 125.0°C is converted to water at 58.0°C. Assume that the specific heat of water is 4.184 J/g ° °C, the specific heat of steam is 1.99 J/g. °C, and AHÇap = 40.79 kJ/mol for water.
I
would like the answer for two questions. question 29 and question
46
All of the above are correct. Question 46 (2 points) What is the initial pressure of a gas having an initial temperature of 90.5K, an initial volume of 40.3 L, a final pressure of 0.83 atm, a final temperature of 0.54 K and a final volume of 2.7 L O4.0 atm 1.3 atm 1.9 atm 0.074 uestion 47 (2 points) ✓ Saved The density of is 0.900...
D Question 5 2 pts Suppose 160 mL of 8.0 M NaOH(aq) is added to 167 mL of 6.0 M HNO3(aq) to make a solution with a density of 1.1 g/mL and a specific heat of 4.1 J/gxK. If the initial temperature of both solutions is 295 K, what will be the final temperature (K)? Enter your answer as an integer. H(aq) + OH(aq) + H2O(1) AH° = -55.8 kJ/mol
My answer is wrong for the 6th time what am I doing wrong and
how do i do this
Enter your answer in the provided box. From the data below, calculate the total heat (in J) needed to convert 0.803 mol of gaseous ethanol at 300.0°C and 1 atm to liquid ethanol at 25.0°C and 1 atm: b.p. at 1 atm: 78.5°C AH®: 40.5 kJ/mol vap Cgas: 1.43 J/g.°C Cliquid: 2.45 J/g °C -4849|o1 J
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