Expressing amounts of energy in different energy units is necessary to solve many chemistry problems. For practice, complete the following table. The Joule () is the Si unit of energy. I calorie (cal) - 4.184 J cal kJ 578 137 0.439

Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 194.0 g sample…

A: Mass of sample = 194 gram Initial temperature = - 8.3℃ Final Temperature , T2 = 4.5 ℃ Change in…

Q: How many grams of water can be heated from 25.0 oC to 75oC using 12500.0 Joules?

A: Given, amount of heat =12500.0 Joulesinitial temperature =25 °Cfinal  temperature =75 °Cwe are asked…

Q: A gas in a system has a constant pressure. The surroundings around the system lose 62 joules (j) of…

A: Internal energy may be defined as the total amount of energy present within a substance and it is…

Q: 6.111 In a calorimetric experiment, 6.48 g of lithium hy- droxide, LİOH, was dissolved in water. The…

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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 sample of aluminum metal absorbs 9.86 J of heat, upon which the temperature of the sample…

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Q: Which of the following (with specific heat capacity provided) would show the smallest temperature…

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Q: A chemical system has AE>0, q>0, w 0. Choose the correct statements conceming this system. Choose…

A: This question is related to thermodynamics.  Exothermic reactions are those in which heat energy is…

Q: kJ of heat were added? Specific heat 34 J/g°C. 1 calorie = 4.184 J %3D

A: Heat  (q) = 36.5 ×1000 = 36500 J Mass of water = 275 g Heat capacity (s) = 4.184 J/g-°c Heat (q) =…

Q: Consider the combustion of propane: C3 Hs (g) +502 (9) + 3CO2 (9) + 4H2O(1) AH = -2221 kJ A balloon…

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Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

A: 1 calorie = 4.184 Joule  1 J = (1/4.184) cal  1 kJ = 1000 J  1 kJ = 239 cal

Q: A system receives 225 J of heat from the surroundings and delivers 428 J of work. What is the change…

A: The first law of thermodynamics states that "energy can neither be created nor destroyed , but can…

Q: 1) The three combustion reactions are: C(s, gr) + O>(g) --> CO,(g) AH =-393.50 kJ H,(g) + ½0,(g)…

A: Solution:    The change in enthalpy of formation is the enthalpy change when the formation of one…

Q: A sample of iron absorbs 62.3 J of heat, upon which the temperature of the sample increases from…

A: The amount of heat required is related to specific heat capacity as,…

Q: If 400 J of heat is given to a system and the system does 200J of work, what is the change in…

A: Answer:- This question is answered by using the simple concept of calculation of change in energy…

Q: Q1:- Find the external work done by the system in kcal, when 10 kcal of heat is supplied to the…

A: ✓The First Law of Thermodynamics states that heat is a form of energy, and thermodynamic processes…

Q: The heat of combustion for a sample of coal is 24.0 kJ/g. What quantity of coal (in grams) must be…

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Q: Magnesium metal reacts with HCl according to the following balanced equation: Mg(s)  +      2 HCl…

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Q: 8. (Calorimetry - Determination of specific heat) A 5.1-gram piece of gold jewelry is removed from…

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Q: (d) Consider the complete combustion of Benzene (CeH6). If the density of benzene is 0.88 g/mL, what…

A: Given reaction is : 2C6H6 (l) + 15 O2 (g) ----------> 12CO2 (g) + 6H2O (g) , ΔH0rxn = -6278 KJ…

Q: A 1489 kg1489 kg car is traveling down the road at 100.2 km/h.100.2 km/h. While traveling at this…

A: Mass = m= 1489kg. Velocity v = 100.2km/h = 100.2×5/18 = 27.7m/s (1km/h =5/18 m/s).

Q: A coffee cup calorimeter, including that water it contains, has a heat capacity of 425 J/K, and is…

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Q: What is the change in internal energy for a system that performs 213 kJ of work on its surroundings…

A: Given, System performs 213 KJ of work on its surrounding And system loses 79 KJ of heat in the…

Q: Calculate the heat change (q) in J when 8.111 grams of water is cooled from 1.472 ºC to -2.592 ºC.

A: The heat change during a temperature change ca be calculated as follows. q=mc∆Tq=heat…

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 151. kJ during a…

A: Enthalpy of a mixture of gaseous reactants are decreased by 151 KJ and - 92 KJ of work is done…

Q: In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used…

A: CALCULATION OF SPECIFIC HEAT CAPACITY

Q: 1.64 L of hydrochloric acid are mixed with 735 mL of ammonia in a calorimeter. The initial…

A: Solution - According to the question - Given - 1.64 L = 1.64 * 10000 = 1640 ml Total volume = 1640 +…

Q: A student heats 62.33 grams of chromium to 99.36 °C and then drops it into a cup containing 82.16…

A: Given, mass of chromium =62.33 graminitial  temperature of chromium =99.36 °Cmass of water =82.16…

Q: The specific heat capacities for several substances are shown in the table. Substance Specific Heat…

A: Specific Heat Capacity is the amount of heat required to change the temperature of a unit mass…

Q: The nutritional label on the package indicates that a cup of soup contains 180. Calories. Express…

A: Coup of soup contains 180 calories  We know that 1 cal= 4.2 J  Then 180 cal = 180× 4.2 J = 756 J…

Q: 4) The specific heat of copper is 0.385 J/g °C. Using the heat equation, Heat = mass x temperature…

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Q: What is the Kinetic energy of a 2000-Ib car traveling at 59 miles per hour? (Ib =0.4536 kg, 1 mi=…

A: The Kinetic energy of a 2000-lb car traveling at 59 miles per hour is calculated as,1lb =0.4536…

Q: The specific heat capacities for several substances are shown in the table. Substance Specific Heat…

A: Given :-  Substance          specific heat (J/g°C)  Iron                        0.45 Air…

Q: How much heat has to be added to 513 g of copper at 22.3°C to raise the temperature of the copper to…

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Q: what pure metal is the ring composed?

A: Mass of metal (m) = 14.8 g Initial Temperature(T1) = 23.2 °c Final Temperature (T2) = 55.8 °c Heat…

Q: Measurements show that the energy of a mixture of gaseous reactants increases by 107. kl during a…

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Q: The initial temperature of a 415 g sample of iron is 10.6 °C. If the sample absorbs 2.64 kJ of…

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Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 614.0 mg sample…

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Q: A coffee cup calorimeter, including that water it contains, has a heat capacity of 425 J/K, and is…

A: Formula: q = C × ∆T where , q = heat  C = Heat Capacity ∆T = Change in temperature   The Heat lost…

Q: In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used…

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Q: A bomb calorimeter, or a constant volume calorimeter, is a device often used to determine the heat…

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Q: Classify as exothermic or endothermic CH4(g)  + 2 O2(g) + →  2 H2O(g) + CO2(g) + 889 kJ How do you…

A: When the reaction releases the heat then it is exo thermic and when it absorbs the heat then it is…

Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

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Q: Consider the combustion of propane: C3 Hs (g) + 502(g) → 3CO2(g) + 4H2O(1) AH = -2221 kJ A balloon…

A: It is given that heat transfer process is 60.0 % efficient. So, 1.6×108 Joules of energy is actually…

Q: In the laboratory a "coffee cup" calorimeter, or constant pressure calorimeter, is frequently used…

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Q: In a certain process, 400 J of heat is added to a system and the system simultaneously does 100 J of…

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Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

A: we know that 1 calorie = 4.184 Joule 1 Joule = 14.184 calorie 1KJ= 1000J 1J = 10-3 KJ

Q: Measurements show that the enthalpy of a mixture of gaseous reactants decreases by 365. kJ during a…

A: Answer: This question is based on the first law of thermodynamics which is based on the conservation…

Q: They are all one question. A chemical reaction is run in which 469 Joules of work is done by the…

A: According to the first law of thermodynamics, the internal energy with work done by the system is…