H2(g) - 2H(g) AH° = 436.4 kJ/mol Br,(g) 2Br(g) AH° = 192.5 kJ/mol H2(g) + Br2(g) 2HB1(g) AH° = -72,4 kJ/mol Calculate AH° for the reaction H(g) + Br(g) HBr(g)

Q: Ethanol (C2H5OH) is used as a base for many fuels. Assume it undergoes complete combustion. How much…

A: The complete combustion reaction for ethanol is given as: C2H5OH(l) + 3O2(g) ----> 2CO2(g) +…

Q: Combustion reactions are exothermic. The heat of reaction for the combustion of 2-methylhexane,…

A:

Q: An unknown organic compound is being proposed as an alternative to gasoline. The enthalpy of…

A: Given The enthalpy of combustion of this compound is 291kcal mol-1. The density is 0.476g mL-1. The…

Q: What is the kinetic energy in J and cal of a 45-g golf ball moving at 61 m/s?   168 J, 40 cal B.…

A: Given, Mass of golf ball = 45g

Q: When 40.0 ml of 3.00 mol/l phosphoric acid (H3PO4) reacts with 144.0 ml of 2.50 mol/l sodium…

A: Volume of 3.00 M H3PO4 taken = 40.0 mL  Volume of 2.50 M NaOH taken = 144.0 mL  Total volume after…

Q: The enthalpy of combustion of benzoic acid is -26.4 kJ/g. What is the enthalpy of combustion…

A:

Q: When 1.00 g1.00 g of ethanol (C2H5OHC2H5OH)is burned in the air, −29.7 kJ−29.7 kJ of heat energy is…

A: Combustion :- The burning of a compound in excess of  air or oxygen is called combustion . It is an…

Q: An unknown organic compound is being proposed as an alternative to gasoline. The enthalpy of…

A: Density is defined as the ratio of mass of any substance to that of volume of that substance at a…

Q: Which of the following is equal to the heat of a chemical reaction, regardless of how the reaction…

A: We know that first of thermodynamics says energy is conserved. Energy has two forms heat and work.

Q: DHE (kJ/mol) Compound NH (g) CH.(g) HCN(g) H,O(g) -46.0 -75.0 135.1 -242.0 6) Heat of formation…

A: Heat of formation(∆Hf) enthalpy is the enthalpy change during the formation os 1 mole of compound…

Q: 1. Determine the amount of energy released when 93.6 g of liquid butane, C,H10(1 combusted.…

A: The given data: The mass of liquid butane = 93.6 g The enthalpy of formation of the given species is…

Q: Step 1: KMNO4, NaOH, heat Step 2: H3O* Step 3: SOCI2, CH3OH Step 4: NaOCH3 Step 5: H30*, heat Step…

A: MnO4 under basic condition converts alkene to dicarboxylic acid. Diazomethane does esterification.…

Q: 7. (SF) Consider the following reaction: C2HO1(aq) + 8 KCIO:(aq) → 12 CO:(g) + 11 H.O(1) + 8 KCI(aq)…

A:

Q: CH,(g) + 2 0,(g) AH rxn = -809.0 kJ/mol co,(g) + 2 H,O(g) AH = -81.3 kJ cond 2 H,O(/) Given the…

A: Combustion is the process of reaction of a hydrocarbon in presence of oxygen to form carbon dioxide…

Q: An unknown organic compound is being proposed as an alternative to gasoline. The enthalpy of…

A:

Q: Q6. Molecular mass of a colorless liquid hydrocarbon is found to be 106 amu and a 0.1888 g the…

A:

Q: From the following enthalpies of reaction H2(g) + F2(g) – 2HF(g) AH = -537 kJ C(s) + 2 F2(g) →…

A:

Q: 1. Sodium cyclamate, NAC6H12NSO3, was popular nonsugar sweetener until it was banned by the Food and…

A: Answer of 1

Q: The heat of combustion of methane, CH4, is 50.1 kJ/g. How much heat would be generated if 1.00 mol…

A: Given, The heat of combustion of methane (CH4) = 50.1 kJ/g How much heat would be generated if 1.00…

Q: 7.8 The combustion of butane produces heat to the equation: 2C4H10(g) + 13O2(g) → 8 CO2(g) +…

A: The heat of combustion of per gram of butane can be calculated as,

Q: The specific heat of octane, C8H18(l), is 2.22 J/g-K. (a)How many J of heat are needed to raise the…

A: This problem can be solved by using the equation : q=mc∆Twhere q is the heat required            m…

Q: Calculate AH for the reaction: NO (g) + O (g) → NO2 (g) AH. = ? From given the following…

A:

Q: 5.78 Diethyl ether, C4H100(1), a flammable compound that was once used as a surgical anesthetic, has…

A: The standard enthalpy change of formation is the change in enthalpy occurring in the formation of 1…

Q: An unknown organic compound is being proposed as an alternative to gasoline. The enthalpy of…

A: Heat released from combustion of 0.28 L of organic compound is = 58.25 k cal

Q: 2. Cite some factors that could possibly affect the AH in this experiment. 3. Glucose, C6H12O6, is…

A:

Q: 6. Calculate the formation enthalpy (AHorm) for benzene (C6H6). Is this reaction endothermic or…

A:

Q: An unknown organic compound is being proposed as an alternative to gasoline. The enthalpy of…

A:

Q: NaOH(s)_> Na*(ag) + OH (ag), AH1 (kJ) (1) + Na (ag) + OH (ag) + H*(ag) + Cl(ag)_-> H2O(I) + Na*(ag)…

A:

Q: ormation to answer Questions 6-9: A sample of NH4NO3 with a mass of 5.0 g is dissolved in 40.1 g of…

A:

Q: 4. How much heat is released when 29.5 grams of Cl2 (g) reacts with excess hydrogen? H2 (g) + Cl2…

A: Given, H2(g) + Cl2(g) ➝ 2HCl(g)  ∆H° = -186 kJ Note: negative sign indicate the release of energy as…

Q: How much heat is produced by combustion of 125 g of methanol under standard state conditions? CH3OH…

A: The standard conditions are partial pressure of all gas at 1 bar of pressure   (1 bar=0.987 atm, so…

Q: 2. The specific heat of octane, C8H18(0), is 2.22 J/g-K. a. How many J of heat are needed to raise…

A: We know that, Q = mC∆T Q is the energy in joules. m is the mass of the substance. ∆T is the…

Q: 9. Calculate AH for the reaction 4NH3 (g) + 502 (g) → 4NO (g) + 6H20 (g), from the following data.…

A:

Q: Calculate the final temperature that results when A 12.6 g sample of water at 22.9 0C absorbs 875 J…

A: The given two problem can be solved by this equationQ=m.c.△TWhereQ=Amount of heat absorbed or lost…

Q: The complete combustion of propane gas can be represented as a. 2 C3H8 + 7 O2→ 2 C + 2 CO2 + 8 H2O +…

A: Correct choice is option (C)  Pls use 5O2 instead of 10O2 because total Of atom is 10 in the product…

Q: The heat of reaction for the combustion of pentane, C5H12, is 838.7 kcal/mol. What is the heat of…

A:

Q: +3 CO(g) 2 Fe(s) + 3 CO2(g) 3 02(g) → 2 Fe203(s) AH = -1648 kJ → 2 CO(g) + 02(g) AH= +565.4 kJ

A: (1) 4Fe + 3O2----> 2Fe2O3, □H = -1648 kJ (2) 2CO2 ----> 2CO + O2, □H = +565.4 kJ (3) Fe2O3 +…

Q: Considering the reaction given below, what volume of ethanol (d= 0.79g/mL)is required to produce 250…

A: We have reaction of ethanol combustion producing the 1370 KJ of heat . We have to calculate the…

Q: Which of the following is the correct molar specific heat of water used when making calculations…

A: Specific heat capacity is defined as the amount of heat required to increase the temperature of one…

Q: An unknown organic compound is being proposed as an alternative to gasoline. The enthalpy of…

A: Enthalpy of Combustion: The heating value (or energy value or calorific value) of a substance, is…

Q: . What is the heat of combustion for 2-methylhexane in kcal/gram?  kcal/gram How much heat will be…

A: MgF2 ⇌ Mg2+ + 2F8 C7H16 + 11 O2 →7CO2 + 8 H2O  Heat of combustion = 1.150×103 KCal\Mol  1.150 × 103…

Q: 4. If the heat of formation of carbon dioxide is -393 kJ/mol, then the heat of reaction for the…

A: Heat of the formation is the amount of heat realesed when 1 mol of a substance is formed from it's…

Q: A pound of body fat stores an amount of chemical energy equivalent to 3500 Cal. When sleeping, the…

A: Given, energy expend while sleeping =0.45 Cal/ lb h Weight of the person = 171 lb  tile length of…

Q: Use the following information to answer Questions 6-9: A sample of NH4NO3 with a mass of 5.0 g is…

A: When change in enthalpy is negative then reaction is exothermic and when change in enthalpy is…

Q: Suppose you burn a 2.4 g sample of potato chips. You use the heat given off from that process to…

A:

Q: Calculate the AH for the reaction NO(g) + O(g) given the following information: NO₂(g) NO(g) + O3(g)…

A: Given aim equation is :  Step equations are : Calculate the change in enthalpy of the aim equation…

Q: 2. From the following heats of reaction: 2 SO2(e) + O2(g) →2 SO3(2) 2 S(6) + 3 O2(e) AH=-196 kJ AH =…

A:

Q: Use the following information to answer the next question. Diboron trioxide, B203(s) has many uses…

A: From given data you have to calculate the enthalpy change for the reaction: 2 H3BO3 (aq) --->…

Q: An unknown organic compound is being proposed as an alternative to gasoline. The enthalpy of…

A:

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.