Homework Answers
q = mHvap
q = 163 KJ
m = ?
Hvap =
44.01 KJ
163 = m x 44.01
m = 3.70 g
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The evaporation of water is endothermic: H.O(1) H0(9) AH.. = +44.01 kJ Part A What minimum mass of water in has to...
Part A Hydrogen gas reacts with oxygen to form water. AH = -483.5 kJ 2 H20(g)...
Part A Hydrogen gas reacts with oxygen to form water. AH = -483.5 kJ 2 H20(g) 2 H2(g) +O2(g) Determine the minimum mass of hydrogen gas required to produce 177 kJ of heat. 0.732 g O 11.0 g O 0.738 g O 1.48 g Request Answer Submit Provide Feedback
1 Part A The automobile has a mass of 2.5 Mg and center of mass at...
1 Part A The automobile has a mass of 2.5 Mg and center of mass at G. Take , 0.3. (Figure 1) Determine the towing force required to move the car if the back brakes are locked, and the front wheels are free to roll. Express your answer to three significant figures and include the appropriate units. F- Value Units Figure 1 of 1 Submit Request Answer Return to Assignment Provide Feedback 30 0.6 m 0.3 m m1.50 m 075...
how to solve <Phases and Phase Changes Problem 17 Review IC Part A A sample of...
how to solve
<Phases and Phase Changes Problem 17 Review IC Part A A sample of steam with a mass of 0.508 g at a temperature of 100 °C condenses into an insulated container holding 4.30 g of water at 3.0 °C. (For water, AH = 40.7 kJ/mol and water = 4.18 J/(g. °C) You may want to reference (Pages 487 489) Section 11.6 while completing this problem Assuming that no heat is lost to the surroundings, what is the...
Problem 3 Review Part A has 7.00x10-22 J more potential energy than a water molecule aligned...
Problem 3 Review Part A has 7.00x10-22 J more potential energy than a water molecule aligned with the field. The dipole What is the strength of the electric field? Express your answer with the appropriate units. alue N/C Submit K Return to Assignment Provide Feedback
IReview Part A A small charged bead has a mass of 3.3 g. It is held...
IReview Part A A small charged bead has a mass of 3.3 g. It is held in a uniform electric field E = (200,000 N/C, up). When the bead is released, it accelerates upward with an acceleration of 24 m/s2. What is the charge on the bead? Express your answer with the appropriate units. ? -μΑ Value Units q = Request Answer Submit Return to Assignment Provide Feedback
Problem Assignment No. 9 Review Problem 19.3 The tire has a mass of 9 kg and...
Problem Assignment No. 9 Review Problem 19.3 The tire has a mass of 9 kg and a radius of gyration ko 235 mm. It is released from rest and rolls down the plane without slipping. (Figure 1) Part A Determine the speed of its center O when t 1.5 s Express your answer to three significant figures and include the appropriate units. Value Units Submit Request Answer Provide Feedback Figure 1 of 1 l mm 30
Constants Periodic Table Consider the reaction: H2(g) +12(s) + 2HI(g) Average Bond Enthalpies (kJ/mol) Part A...
Constants Periodic Table Consider the reaction: H2(g) +12(s) + 2HI(g) Average Bond Enthalpies (kJ/mol) Part A Use the bond enthalpies in the table to estimate AH for this reaction, ignoring the fact that iodine is in the solid state. Express your answer in kilojoules to two significant figures. IVO AQ R o 21 ? C-H 413 N-H 391 0-H 463 F-F 155 C-C 348 N-N 163 0-0 146 C=C 614 N-O 201 0=0 495 Cl-F 253 C-N 293 N-F 272...
Beam AB has a negligible mass and thickness, and supports the 240-kg uniform block. It is...
Beam AB has a negligible mass and thickness, and supports the 240-kg uniform block. It is pinned at A and rests on the top of a post, having a mass of 20 kg and negligible thickness. The coefficients of static friction at B and Care MB 0.4 and Mc = 0.2, respectively. (Figure 1) Part A Determine the minimum force P needed to move the post. Express your answer to three significant figures and include the appropriate units. ? p....
<Assignment 9 Graded 2020 Problem 11.83 6 of 6 > A young girl sits at the...
<Assignment 9 Graded 2020 Problem 11.83 6 of 6 > A young girl sits at the edge of a dock by the bay, dipping her feet in the water. At the instant shown in the figure(Figure 1), she holds her lower leg stationary with her quadriceps muscle at an angle of 39° with respect to the horizontal. Part A Use the information given in the figure, plus the fact that her lower leg has a mass of 3.3 kg ,...
< 9 of 13 Review Constants Periodic Table Part A A calorimeter contains 28.0 mL of...
< 9 of 13 Review Constants Periodic Table Part A A calorimeter contains 28.0 mL of water at 11.0 °C. When 250 g of X (a substance with a molar mass of 60.0 g/mol) is added, it dissolves via the reaction X(s) + H2O(1) X(aq) and the temperature of the solution increases to 30.0 °C. Calculate the enthalpy change, AH, for this reaction per mole of X. Assume that the specific heat of the resulting solution is equal to that...
Part A Hydrogen gas reacts with oxygen to form water. AH = -483.5 kJ 2 H20(g) 2 H2(g) +O2(g) Determine the minimum mass of hydrogen gas required to produce 177 kJ of heat. 0.732 g O 11.0 g O 0.738 g O 1.48 g Request Answer Submit Provide Feedback
1 Part A The automobile has a mass of 2.5 Mg and center of mass at G. Take , 0.3. (Figure 1) Determine the towing force required to move the car if the back brakes are locked, and the front wheels are free to roll. Express your answer to three significant figures and include the appropriate units. F- Value Units Figure 1 of 1 Submit Request Answer Return to Assignment Provide Feedback 30 0.6 m 0.3 m m1.50 m 075...
how to solve
<Phases and Phase Changes Problem 17 Review IC Part A A sample of steam with a mass of 0.508 g at a temperature of 100 °C condenses into an insulated container holding 4.30 g of water at 3.0 °C. (For water, AH = 40.7 kJ/mol and water = 4.18 J/(g. °C) You may want to reference (Pages 487 489) Section 11.6 while completing this problem Assuming that no heat is lost to the surroundings, what is the...
Problem 3 Review Part A has 7.00x10-22 J more potential energy than a water molecule aligned with the field. The dipole What is the strength of the electric field? Express your answer with the appropriate units. alue N/C Submit K Return to Assignment Provide Feedback
IReview Part A A small charged bead has a mass of 3.3 g. It is held in a uniform electric field E = (200,000 N/C, up). When the bead is released, it accelerates upward with an acceleration of 24 m/s2. What is the charge on the bead? Express your answer with the appropriate units. ? -μΑ Value Units q = Request Answer Submit Return to Assignment Provide Feedback
Problem Assignment No. 9 Review Problem 19.3 The tire has a mass of 9 kg and a radius of gyration ko 235 mm. It is released from rest and rolls down the plane without slipping. (Figure 1) Part A Determine the speed of its center O when t 1.5 s Express your answer to three significant figures and include the appropriate units. Value Units Submit Request Answer Provide Feedback Figure 1 of 1 l mm 30
Constants Periodic Table Consider the reaction: H2(g) +12(s) + 2HI(g) Average Bond Enthalpies (kJ/mol) Part A Use the bond enthalpies in the table to estimate AH for this reaction, ignoring the fact that iodine is in the solid state. Express your answer in kilojoules to two significant figures. IVO AQ R o 21 ? C-H 413 N-H 391 0-H 463 F-F 155 C-C 348 N-N 163 0-0 146 C=C 614 N-O 201 0=0 495 Cl-F 253 C-N 293 N-F 272...
Beam AB has a negligible mass and thickness, and supports the 240-kg uniform block. It is pinned at A and rests on the top of a post, having a mass of 20 kg and negligible thickness. The coefficients of static friction at B and Care MB 0.4 and Mc = 0.2, respectively. (Figure 1) Part A Determine the minimum force P needed to move the post. Express your answer to three significant figures and include the appropriate units. ? p....
<Assignment 9 Graded 2020 Problem 11.83 6 of 6 > A young girl sits at the edge of a dock by the bay, dipping her feet in the water. At the instant shown in the figure(Figure 1), she holds her lower leg stationary with her quadriceps muscle at an angle of 39° with respect to the horizontal. Part A Use the information given in the figure, plus the fact that her lower leg has a mass of 3.3 kg ,...
< 9 of 13 Review Constants Periodic Table Part A A calorimeter contains 28.0 mL of water at 11.0 °C. When 250 g of X (a substance with a molar mass of 60.0 g/mol) is added, it dissolves via the reaction X(s) + H2O(1) X(aq) and the temperature of the solution increases to 30.0 °C. Calculate the enthalpy change, AH, for this reaction per mole of X. Assume that the specific heat of the resulting solution is equal to that...
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