Q: If a system has 42.0 J of heat added to it, and the system does 25.0 J of work on its surroundings,…
A: According to the first law of thermodynamics, the provided heat is used in increasing the the…
Q: In the laboratory a student finds that it takes 75.4 Joules to increase the temperature of 13.3…
A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…
Q: 1. If a 100-kg sample of aluminum at 25.0 °C is heated with 500 kJ of heat energy, what will be the…
A: The heat absorbed by the aluminium is given by: where m= mass of metal = 100 kgIni q= total heat…
Q: A strip of aluminum weighing 0.789 g is heated from 26.1 C to 45.8 C. What is the amount of heat…
A:
Q: 2. Thirty-two joules of heat is added to a 255 gram iron bar How much will the iron bar's…
A:
Q: What is the specific heat of tin if a 55.0-g sample absorbs 982 J of heat to raise its temperature…
A:
Q: A 15.0 g piece of cadmium metal absorbs 134 J of heat while rising from 24.0°C to 62.7°C. Calculate…
A: m = 15 g q = 134 J T1 = 24.0° C T2 = 62.7°C c = ?
Q: If a system has 62.0 J of heat added to it, and the system does 25.0 J of work on its surroundings,…
A: Dear student, Since it is not mentioned that which question you want to ask out of these two…
Q: How much heat is needed to raise the temperature of 100.0 g of water from 30.0°C to 100.0°C?
A: The specific heat can be defined as the amount of heat per unit mass that is needed to raise the…
Q: What mass of methane must be burned to release 185 kJ of heat?
A: Given , CH4(g) +2O2(g) →CO2(g) +2H2O(g) ∆Hrxn=-890 kJmol
Q: A 7.0-gram metal sample absorbed 211 J of heat as it was heated from 28°C to 85°C. What is the…
A: Given details, m = 7.0 g Q = 211 J T1 = 28° C T2 = 85° C To calculate the specific heat of the metal…
Q: How much heat is needed to raise the temperature of 91.0 g of water from 34.0 °C to 98.0 °C?
A: Mass of water, m =91.0 g Initial temperature, T1=34.0 °C Final temperature, T2=98.0 °C Specific…
Q: A 44.3 g sample of water at 100.00 °C (specific heat of water = 4.184J/g.°C) was placed in an…
A:
Q: Tin has a specific heat of 0.21 J/g°C. If a 3.2 kg sheet of tin absorbs 8.4 kJ of energy, by how…
A: According to the equation, Q=mcdTQ=heat absorbedm=mass of substancedT= change in…
Q: The specific heat of AI is 0.901 J/g C. The specific heat of Iron is 0.449 J/g C. Which substance…
A: The quantity of energy (Q) required can be calculated as follows,
Q: The temperature of a 35.1 g sample of iron increases from 245 °C to 318 °C. If the specific heat of…
A: Given :- mass of iron = 35.1 g initial temperature = 24.5 °C final temperature = 31.8°C specific…
Q: An iron bar of mass 869 g cools from 94°C to 5°C. Calculate the heat released (in kilojoules) by the…
A: Q = m . s . ∆T
Q: What is the specific heat of an unknown metal if a 15.1 g sample of this metal shows a temperature…
A: Specific heat capacity of metal can be calculated using formula: Q = m.s.∆T Where Q = heat given m =…
Q: Calculate the specific heat of a 300.0g sample of iron. If it took 1000. Cal to raise the…
A: Mass of sample = 300 g Heat needed = 1000 cal ∆T = 123 oC
Q: What is the specific heat capacity of an unknown metal if 75.00 g of the metal absorbs 418.6J of…
A: Calculation of heat capacity: The amount of heat required to increase the temperature of one gram of…
Q: Volume of Water(mL)=100mL Initial temp of water (C)= 21 C degrees Mass of metal(g)=2.9grams Final…
A:
Q: The mixture of gas and air inside a cylinder reacts, releasing 400 kJ of total energy. If the system…
A: 150 kJ of heat is released from the system
Q: How much heat is required to raise the temperature of 125 grams of water by 10.0 degrees C?
A: Answer The quantity of heat required to raise the temperature of 125 g of water by 10.0°C is 5230 J.…
Q: How much heat is required to raise the temperature of 55 grams of water from 16 degrees Celsius to…
A:
Q: How much heat (in kJ) is required to raise the temperature of a 525.0 mL sample of water from 22.1 C…
A: The heat required to raise the temperature is directly proportional to the mass of sample and the…
Q: If 200g of water at 20°C absorb41840 J of energy, what will the final temperature be? The specific…
A: Given: Mass of water=200 g Temperature change, ∆T=(T-20.0)°C Heat absorbed, q =41840 J Specific…
Q: A 45g silver spoon (specific heat 0.24 J/g.°C) at 25 °C is placed in 180 g of coffee at 95 °C and…
A: The final temperature of the spoon and coffee will be same. we know , Heat = ms∆T(m is…
Q: A piece of unknown metal weighs 217 g. When the metal piece absorbs 1.43 kJ of heat, its temperature…
A: Given: Mass of metal, m = 217 g Heat energy, q = 1.43 kJ Initial temperature, T1 = 24.5oC Final…
Q: If a system does 73.0 kJ of work on its surroundings and releases 105 kJ of heat, what is the change…
A:
Q: A 135 g sample of metal requires 2.50 kJ to change its temperature from 19.5 oC to 100.0 oC. What is…
A: Given,Mass of the metal, m = 135 gHeat required, q =2.50 kJ = 2500 J (1 kJ = 1000 J)Initial…
Q: If we add 30.0 J of heat to 10.0 grams of aluminum, by how much will its temperature increase? The…
A:
Q: An iron can weighing 50 grams absorbs 256.0 J of heat and warms by 11.4C. What is the specific heat…
A: The amount of heat required to raise the temperature of a substance by one degree Celsius is called…
Q: In the laboratory a student finds that it takes 76.1 Joules to increase the temperature of 12.8…
A: Mass of copper m = 12.8 g Heat energy required Q = 76.1 Joules Initial temperature T1 = 20.5 0C…
Q: How much heat is required to raise the temperature of 25g of water from 25.0°C to 30.0°C? The…
A: Mass of water, m = 25 g Specific heat of water, Cs = 4.184 J/g °C Initial Temperature, Ti = 25 °C…
Q: 1. When 145.6 J of heat are added to 13.0 g of mercury in a thermometer, the temperature increases…
A: Here we have to determine specific heat of mercury if 13 g of Hg absorbed 145.6 J heat energy so…
Q: A sample of water with a mass of 764.1g undergoes a temperature change from 41.23oC to 20.82oC. What…
A: Given : Mass of sample = 764.1 g Initial temperature = 41.23oC Final temperature =20.82oC.
Q: How much energy is needed to raise the temperature of 325g of water by 10.0 degrees? The specific…
A: Thermodynamics is branch of chemistry in which we deal with heat of reaction.
Q: What is the specific heat of solid iron when a 15.75 gram sample gains 1,086.75 Joules of heat…
A: The calorimetry method is used the find the total amount of heat transferred in a system. In this…
Q: A 250.0 g metal bar requires 5.866 kJ to change its temperature from 22 o C to 100.0 o C. What is…
A: The heat required (Q) to raise the temperature of any substance of mass m can be expressed as…
Q: An unknown hot metal at 122.41°C with a mass of 53.37g was mixed with 28.15g of water at an initial…
A: We have to calculate the specific heat of the unknown metal.
Q: A 25.0 g mold made of an alloy absorbed 250 J of heat as its temperature changed from 25 °C to 78…
A: Given information is as follows; Mass (m) of gold = 25.0 g Heat absorbed (q) = + 250 J Initial…
Q: An unknown solid metal at 150 degrees celsius was placed in 1.00 L of water at 25 degrees celsius.…
A: Heat absorbed or emitted by a substance = mass of the substance x specific heat of the substance x…
Q: The temperature of a 16.2g sample of gold increases from 20.5°C to 30°C. If the specific heat of…
A: Specific heat capacity is the amount of heat that is required to rise a temperature of 1 kg…
Q: specific heat
A:
Q: If it takes 41.72 joules of heat for a piece of gold weighing 18.69 grams from 10.0oC to 27.0oC,…
A:
Q: The air in an inflated balloon (defined as the system) warms over a toaster and absorbs 115 J of…
A: According to first law of thermodynamics, energy can neither be created nor destroyed, it can only…
Q: An unknown hot metal at 107.03°C with a mass of 48.67g was mixed with 37.99g of water at an initial…
A: Given data contains, Mass of unknown metal , mm= 48.67 gInitial temperature , Tim= 107.03°CMass of…
Q: The internal energy of a system increased by 982 J when it absorbed 492 J of heat. Was work done by…
A: When a system absorbs energy it means work done on the system, We know that, ∆U=982 Jq=492 J…
Q: 10. It took 4.15 x 103 J of energy to raise the temperature of a piece of copper metal from 31°C to…
A: We have to calculate the mass of metal.
Q: A sample of water of unknown mass undergoes a temperature change from 68.09oC to 72.61oC with a…
A: Given: Energy added = 205.8 J Initial temperature of water = 68.09 oC And final temperature of water…
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- Calculate H for the reaction 2NH3(g)+12O2(g)N2H4(l)+H2O(l) given the following data: 2NH3(g)+3N2O(g)4N2(g)+3H2O(l)H=1010.KJN2O(g)+3H2(g)N2H4(l)+H2O(l)H=317KJN2H4(l)+O2(g)N2(g)+2H2O(l)H=623KJH2(g)+12O2(g)H2O(l)H=286KJ[References] It has been determined that the body can generate 5500 k) of energy during one hour of strenuous exercise. Perspiration is the body's mechanism for eliminating this heat. What mass of water would have to be evaporated through perspiration to rid the body of the heat generated during 2 hours of exercise? (The heat of vaporization of water is 40.6 kJ/mol.) Mass kg Submit Answer Try Another Version 2 item attempts remaining[References] It has been determined that the body can generate 5500 kJ of energy during one hour of strenuous exercise. Perspiration is the body's mechanism for eliminating this heat. What mass of water would have to be evaporated through perspiration to rid the body of the heat generated during 2 hours of exercise? (The heat of vaporization of water is 40.6 kJ/mol.) Mass kg Submit Answer Try Another Version 2 item attempts remaining.
- Check for Understanding (5 mins) 1. Calculate the joules of energy required to heat 454.3g of water from 5.4 °C to 98.6 °C. 2. What quantity of energy (in J and cal) is required to heat a piece of iron weighing 1.31 g from 25.0 C to 46.0 °C? 3. A 5.63g sample of solid gold is heated from 21.0 °C to 32.0 °C. How much energy, (in J and cal) is required?Calculate the energy (in kJ) required to heat 0.882 grams of water from -22.7 ℃ to 53.2 ℃. Please type answer note write by hend.A scientist measures the standard enthalpy change for this reaction to be -907.4 kJ/mol. 2NH3(g) + 3 N₂O(g) 4N₂(g) + 3 H₂O(g) Based on this value and the standard formation enthalpies for the other substances, the standard formation enthalpy of H₂O(g) is kJ/mol. Submit Answer Retry Entire Group 3 more group attempts remaining
- 2.5 p stion 4 What would the effect on the specific heat of your metal if one drop (0.05mL) of water at 100 degrees Celsius remained on your metal? O the effect would be negligible O the effect would cause the specific heat to be much higher O none of these choices are correct1315 Exam 2 Review Pro x 1o Chem101 N Netflix + x + i app.101edu.co ☆ To * Question 22 of 30 Subm How much heat, in kJ, will be absorbed by a 25.0 g piece of aluminum (specific heat = 0.930 J/g.°C) as it changes temperature from 25.0 °C to 76.0 °C? A) 5.34 kJ B) 1190 kJ C) 1.19 kJ D) 5340 kJ i 10:03 esc @ 23 2$ & * 2 3 4 5 6 7 8 9 backspace r tab e y d f k enter shift V n m shift alt alls15. Question: Chapter: 1 Lesson: 5 Which of the following processes has a positive value for AE and which are endothermic? i. A system absorbs 50 kJ of heat from the surroundings and does 30 kJ of work on the surroundings. ii. A system releases 25 kJ of heat into the surroundings and 45 kJ of work is done on the system. iii. q = 12.5 kJ, W = - 3500 J Hint: Draw pictures using a box to represent the system and use arrows to show if energy is going into the system or out of the system. Calculate AE = q + w
- 1. A system receives 1240 J of energy as heat and does 960 J of work. What is the change in internal energy of the system? (a) +2200 J (b)-2200 J (e) none of the above (c) +280 J (d) - 280 JProblem 4. How much heat, in joules, must be added to a 5.00 x 102- g copper skillet to increase its temperature from 25 °C to 250 °C? The specific heat of copper iron is 0.385 J/g °C.A 27.98 g sample of aluminum is heated from 25 oC to its melting point of 660 oC and then melted completely. How much energy was absorbed by the sample? (Answer in kJ) S=0.91 J/goC Delta Hf = 10.7 kJ/mol