Which of the following is a statement of the first law of thermodynamics?   a ∆E = Efinal-Einitial   b KE = ½ mv2   c Energy can neither be created nor destroyed.   d 1 cal = 4.184 J (exactly)   e A negative ΔH corresponds to an exothermic process.

Q: For each of the following processes, indicate whether the signs of ∆S and ∆H are expected to be…

A: The enthalpy change ∆H is related to the flow of energy in the form of heat. Thus, if heat flows out…

Q: 2. How much heat, in kilojoules, is needed to raise the temperature of 236 g of silver from 8.5oC to…

A: Given, mass of silver, m=236 g initial temperature, Ti=8.5°C Final temperature, Tf= 34.9°C Specific…

Q: A ropes is pulled, increasing its tension. The work done pulling the rope is 23 J. While being…

A: A rope is being pulled which means the work is done on the system and the work done is positive by…

Q: A sample of liquid absorbs 13.5 kJ of heat and does 1.8 kJ of work when it vaporizes. Calculate ∆E…

A: Given that : Heat absorbed by the sample (Q) = +13.5 kJ Work done (W) = 1.8 kJ

Q: on 25 « < Questio 4 points onsider the following metals and their specific heat capacities. If the…

A: We know Q= ms∆t    , Q= amount of  heat absorbed., m =mass.,  s = specific heat capacity , t =…

Q: 3.88g of solid ammonium nitrate dissolves in 60.0g of distilled water in a coffee-cup calorimeter.…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: How much heat is produced when 6.26 g of zinc metal reacts with oxygen gas under standard…

A: We have to calculate energy release in combustion of Zn.

Q: Use the following thermodynamic data to calculate how much heat in kJ is required to change the…

A: Given : Mass of acetone = 66.1 g Initial temperature of acetone = -82.2 oC And final temperature of…

Q: Q10 a)The standard enthalpy change for the following reaction is -1.94×103 kJ at 298 K. 4 Mn(s) +…

A:

Q: 5.3.2 Given the thermochemical equation: 2Cu,O(s) 4Cu(s) + O2(g), AH = +333.8 kJ/mol, calculate the…

A: Correct answer is (a) 11.2 kg By stoichiometry of reaction:   333.8 kJ heat is absorbed with…

Q: The oxidation of copper(I) oxide, Cu,O(s), to copper(II) oxide, CuO(s), is an exothermic process. 2…

A: Since you have posted multiple questions, we are entitled to answer the first only. The balanced…

Q: Using the Table of Thermodynamic Values, determine the change in enthalpy (kJ) for the following…

A: Answer :-  ∆H° =-99.9 (kJ)] The change in enthalpy for the given reaction = -99.9 kJ/mol…

Q: What is the amount of heat released by the reaction when 25.0 g of sodium peroxided is reacted with…

A: Given :-  2Na2O2 (s) + 2H2O (l)  → 4NaOH (s) + O2 (g)  ∆H = -126 kJ  Mass of Na2O2 = 25.0 g  To…

Q: How much heat (in kilojoules) is involved in the oxidation of 105.4 g of Fe at 25°C? 4 Fe(s) + 3 O…

A: Given:-  4 Fe(s) + 3 O 2(g)↔ 2 Fe 2O 3(l) ΔH = -1648 kJ  mass of Fe = 105.4 g  To be calculated :-…

Q: For the reaction Mg²+ + Cu (s) Mg (s) + Cu²“, K = 10ʻ9² and ASº = +18 J/(K-mol). 2. %3D Under…

A: You can see that this reaction is not favorable in forward direaction because if Mg metal is more…

Q: Ice at 0°C is placed in a Styrofoam cup containing 361 g of a soft drink at 23°C. The specific heat…

A: Answer:- This question is answered by using the simple concept of calorimetry which states that heat…

Q: The heats of combustion of carbon, in the forms of graphite and diamond are shown below. C (gr) + O2…

A: The given problem relates to Hess's law, which states that the amount of heat evolved or absorbed in…

Q: QUESTION 9 How many joules must be absorbed by 14.6g of manganese originally at 22.6°C to raise its…

A:

Q: Using the thermodynamic tables find the enthalpy of formation for BaCO3 (s). a. + 314.4 kJ b. – 1219…

A: Enthalpy of formation (∆Hf) :-  The enthalpy change involved when one mole of a substance is formed…

Q: Calculate q (kJ) for the conversion of 2.95 grams of solid aluminum oxide into aluminum and oxygen?…

A:

Q: If 250. g of aluminum is consumed in the reaction, how much heat (in kJ) could theoretically be…

A: 2 Al (s) + Fe2O3 (s) → 2 Fe (l) + Al2O3 (l)              ΔH = −848.0 kJ In the given reaction there…

Q: 7. Which of the following technologies are considered "energy efficient?" Choose ALL that apply. a.…

A: Answers are as follows:

Q: A system absorbs 21.6 kJ of heat while performing 6.9 kJ of work on the surroundings. If the initial…

A:

Q: A balloon is inflated by heating the air inside it. The volume of the balloon changes from 4.00 x…

A: First Law of Thermodynamics -      This law states that energy can neither be created nor destroyed…

Q: Multiple Choice 9. Which of the following is a statement of the first law of thermodynamics?  A.…

A: First law of thermodynamics gives us the relation between change in internal energy, amount of heat…

Q: QUESTION 26 Calculate the PV work done on the surroundings when 1.37 mol of bromine reacts according…

A: for the chemical reaction in which atleast one species is gaseous:- Work done = -∆ng ×R ×T

Q: if 11.2 g of H2 (g) (MM = 2.016 g/mol) were to react according to the balanced equation given below,…

A: Given  Reaction  2C(s) + 3H2(g)  +  12O2(g)   →  C2H6O(g) Mass of H2  = 11.2 gram  Molar mass of H2…

Q: Consider the following thermochemical equation: 2NO(g) + O2(g) → 2NO2(g) AH = -113.2 kJ What is the…

A:

Q: Which law of Thermodynamics explains why the "house always wins"? In other words, when it comes to…

A: Laws of thermodynamics states as– First law– Energy can neither be created nor be destroyed. It can…

Q: Question 9 When two objects transfer their heat evenly between themselves, reaching the same tem-…

A: The condition where rate of forward reaction is same as that of rate of backward reaction is called…

Q: 15. The balanced equation below shows the combustion of propane gas: C3H8(g) 502(g) 3CO2(g) + 4…

A: The balanced chemical reaction is given below.

Q: How much energy in kJ is released when 14.17 g of aluminum react with an excess of copper oxide? 3…

A: The given equation is in terms of moles i.e- 2 moles of Al reacts with excess copper oxide to…

Q: Consider heating 1.0 kg of water at a constant pressure of 1 atm. How much heat is needed to raise…

A: Given : Mass of water = 1 kg = 1000g Pressure = 1 atm Initial temperature, t1 = 25°C Final…

Q: A sample of copper absorbs 4.41E1 kJ of heat, resulting in a temperature rise of 6.21E1 °C.…

A:

Q: Calculate q (kJ) for the conversion of 2.97 grams of solid aluminum oxide into aluminum and oxygen?…

A:

Q: the same amount of heat is added to 5.00 g samples of each of the metals below, which metal will…

A: Specific heat capacity is amount of heat needed to increase the temperature of one gram of substance…

Q: g/mol 2. When 4.98 g of NaOH was dissolved in 49.72 g of water in a calorimeter at 23.7°C, the…

A: Question 2 :- When a 4.98 g of NaOH was dissolved in 49.72 g of water in a calorimeter at 23.7°C…

Q: A system absorbs 21.6 kJ of heat while performing 6.9 kJ of work on the surroundings. If the initial…

A: Since, you have asked multiple questions, we will solve the first question for you.  In Question-1,…

Q: Determine ΔH for the third reaction from the information given.   C3H8(g) + 3 H2O(g) ↔ 3 CO(g) + 7…

A: Calculating ∆H for the given reaction by multiplying second reaction by 3 and adding to reaction 1.

Q: Questions 123 – 125 relate to a heat engine which uses heat to do 50 J of work, and then exhausts…

A:

Q: The standard enthalpy change for the following reaction is 2.44×103 kJ at 298 K. 2 BaCO3(s)---&gt;2…

A: Given: 2 BaCO3(s) → 2 Ba(s) + 2 C(s, graphite) + 3 O2(g)     ΔH° = 2.44×103kJ  ----eqn(1)

Q: A gas absorbs 51 kJ of heat and does 21 kJ of work. Calculate ΔE . ΔE = _____kJ

A: Given, heat absorbs by the gas =+51 kJwork is done by the gas =-21 kJwe are asked to calculate the…

Q: Using the thermodynamic tables find the enthalpy of formation for BaCO3 (s) a. none of these b. –…

A: In this question, we want to determine the Enthalpy formation for BaCO3(s)  How we can determine the…

Q: 1. The standard enthalpy changes for the formation of aluminium oxide and iron (III) oxide are 2…

A: Note : Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: Heat is the flow of energy from Low temperature to high temperature. Ob High temperature to low…

A: Heat is a type of energy and the heat of a system can be measured by measuring the temperature of…

Q: State the second law of thermodynamics.

A: Alternative statements of the Second Law of Thermodynamics There are three types of statements for…

Q: A balloon filled with gas is compressed under an external pressure of 3.0 atm from 4.0 L to 1.0 L.…

A: Work done= P(del V) Work done= (3 atm)*(4-1 l) =(3 atm)(3l) =9L-atm =9*101.325J =911.825J

Q: An unknown sample of coal is burned in an apparatus with a calorimeter constant of 0.73 kj/°C. When…

A:

Q: Q1. Describe the change in temperature in diagram A and diagram B. Q2. Interpret AE 0. When do we…

A: In diagram A, the heat energy is released from the system In diagram B, the heat energy is absorbed…