When 0.395 g of sodium metal is added to an excess of hydrochloric acid, 4110 J of heat are produced. What iš the enthalpy of the reaction as written? 2 Na(s) + 2 HCI(aq) → 2 NACI(aq) + H,(g)

Q: A 1423 kg car is traveling down the road at 94.2 km/h. While traveling at this rate of speed, what…

A: The kinetic energy of any moving objects is 12mv2, where m is the mass of the object and v is the…

Q: When octane (C,H3, density = 0.699 g/mL) undergoes complete 18 combustion, it provides energy…

A: Given that, 2 moles of octane release 10932 kJ of energythe density of octane - 0.699 g/mL = 0.699…

Q: Suppose you are investigating the reaction: M(s) + 2 HCl(aq) → MCl2(aq) + H2(g). You weigh out a…

A: The given reaction is written below.M (s) + 2HCl(aq) → MCl2(aq) + H2(g) The relation between…

Q: reaction for C,H, is 3) 12 CO, (g) + 6 H,O(1) + 6542 kJ and the heat produced from the burning is…

A: Final Temperature of water = 29.80°C

Q: Consider the reaction: CH,OHØ) + 30, )→200,(e) + 3H,O), AH=-1.37 x 10' k When a 21.1-g sample of…

A:

Q: In the following reaction, how many moles of CH3OH are required to produce -9.671 x 103 kJ of heat?…

A:

Q: A 1709 kg1709 kg car is traveling down the road at 87.0 km/h.87.0 km/h. While traveling at this rate…

A: Given that,

Q: Consider the equation for the combustion of acetone(C3H6O), the main ingredient in nail polish…

A: Combustion is burning of fuels in the presence of oxygen. It is a highly exothermic reaction and…

Q: When 0.220 g of sodium metal is added to an excess of hydrochloric acid, 2290 J of heat are…

A: Given: 2 Na + 2HCl -----> 2NaCl + H2 when, mass of Na = 0.220g , heat released = 2290J

Q: 124 kJ of heat is absorbed in a reaction that forms nitric oxide from nitrogen and oxygen, what mass…

A: The mass of NO produced = 41.3478 g  The mass of N2 reacted = 19.2984 g

Q: 2. A system performs 3.63 kJ of work and gives off 8.98 kJ of heat. What is the change in energy of…

A: To solve this problem we will use First Law of Thermodynamics  .  According to this law  ∆E = q + w…

Q: If 10.27 kJ of heat is given off when 51.93 g of unknown acid condenses from vapor to liquid, what…

A: Condensation is a process of conversion of vapor to liquid. Enthalpy of condensation is the enthalpy…

Q: Consider the following thermochemical equation for the combustion of acetone, C3H6O, the main…

A: The combustion reaction given is  C3H6O (l) + 4 O2 (g) → 3 CO2 (g) + 3 H2O (g)…

Q: When 50.0 mL of 1.27 M of HCl(aq) is combined with 50.0 mL of 1.32 M of NaOH(aq) in a coffee-cup…

A: Solution A measuring instrument is associate degree object used for measure, or the method of…

Q: The reaction between nitrogen and oxygen gases requires the absorption of 43 kJ of energy per mole…

A: The balanced reaction taking place is given as, => N2 (g) + O2 (g) -----> 2 NO (g)…

Q: What is the change in internal energy of a system that has 275 kcal of work done to it and it…

A: Internal energy is a function of the volume and the temperature. In a closed system of constant…

Q: Consider the following reaction: 2C6H6() + 15 O2(g)- 12 CO2(g) + 6 H20() AH = -5.869 x 103 kJ An…

A: Each reaction takes place account to their stoichiometric radio and account to those things the heat…

Q: The specific heat of water is 4.18 J (g x Celcius). Calculate the molar heat capacity of water.

A: Specific heat of water is 4.18 J / g 0C. That means amounts of heat required by 1 mol of water to…

Q: When methanol, CH,OH, is burned in the presence of oxygen gas, O,, a large amount of heat energy is…

A: CH3OH + 3/2 O2 ...> CO2 + 2H2O dH = -764 KJ Enthalpy of reaction is negative. It means combustion…

Q: If 801 J of heat is available, what is the mass in grams of iron (specific heat = 0.450 J/g•°C) that…

A: Given,  specific heat = 0.450 J/g.oC heat = 801 J , mass = ? , ∆T= 120°C - 22.5°C = 97.5°C

Q: When methanol, CH,OH, is burned in the presence of oxygen gas, O,, a large amount of heat energy is…

A: Enthalpy of reaction = - 764 kJ/mol Energy required = 729 kJ We need to find mass of methanol to be…

Q: 3. A gas does 135 J of work while expanding, and at the same time, it absorbs 156 J of heat. What is…

A: Given: (3) work done by gas=135J Absorbed heat=156J To find: change in internal energy of the…

Q: AU

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Q: the standard enthalpies of fo

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Q: The reaction between nitrogen and oxygen gases requires the absorption of 43 kJ of energy per mole…

A: Given: Heat are absorbed by the reaction = 417 KJ ΔH = 43 KJ/mol Molar mass of NO = 30.01 g/mol

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A:

Q: When 0.670 g of sodium metal is added to an excess of hydrochloric acid, 6970 J of heat are…

A: moles= mass/molar mass 2 Na(s) + 2 HCl(aq)-----> 2 NaCl(aq) + H2(g)                  Or  Na(s) +…

Q: When 145 mL of 0.212 M NaCl(aq) and 145 mL of 0.212 M AgNO3(aq), both at 21.1°C, are mixed in a…

A: Moles of AgNO3 = Molarity× Volume = 0.212 M × (145/1000)L = 0.03074 moles

Q: 4. What speed must a 250.0 kg motorcycle be travelling at to have a kinetic energy of 2.8 x 10* J?

A: We nees to find the speed of motorcycle if, kinetic energy = 2.8×104 J and, mass = 250.0 kg

Q: Chemical energy is released or absorbed from reactions in various forms. The most easily measurable…

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Q: In the following reaction, how many moles of CH3OH are required to produce -2191 kJ of heat? 2 CH3OH…

A: The balanced reaction taking place is given as,

Q: What is the heat, q, in joules transferred by a chemical reaction to the reservoir

A: Given :-  mass = 155 g  Initial temperature = 22.0°C  Final temperature = 26.5 °C  Specific heat…

Q: If 901 J of heat is available, what is the mass in grams of iron (specific heat = 0.450 J/g･°C) that…

A: The amount of heat available is = 901 J The specific heat of iron is = 0.450 J/g.oC The rise in…

Q: When 135 mL of 0.204 M NaCl(aq) and 135 mL of 0.204 M AgNO3(aq), both at 21.5°C, are mixed in a…

A: Coffee cup calorimeter is a steady pressure calorimeter. As such, the heat measured in such a system…

Q: Chargers for cell phones get warm while they are being used. Some of the energy they are using is…

A: Given  Energy needed for charging = 235 J  Energy wasted as heat = 345 J

Q: Enthalpy is the a. Heat of combustion at constant pressure b. Heat of formation at constant pressure…

A: Interpretation -  To determine the energy of a system at constant pressure, when enthalpy is the a.…

Q: When O.376 g of sodium metal is added to an excess of hydrochloric acid, 3910 J of heat are…

A:

Q: 2. Carbon tetrachloride can be formed by reacting chlorine with methane: CH4 + 2 Cl2 → CCL4 + 2 H2…

A: CH4 + 2Cl2-----> CCl4 +2H2 ∆Hof (CH4) = -75 kJ/mol ∆Hof (CCl4 ) = -135 kJ/mol

Q: When one mole of ethylene gas, C2H4, reacts with fluorine gas, hydrogen fluoride and carbon…

A:

Q: When 130. mL of 0.198 M NaCl(aq) and 130. mL of 0.198 M AgNO3(aq), both at 21.8°C, are mixed in a…

A: When the system release energy then the process is known as exothermic. When the system absorbs…

Q: The enthalpy change when a strong acid is neutralized by strong base is -56.1 kJ/mol. If 25.0 mL of…

A: HBr + NaOH → NaBr + H2O    First calculate the millimoles of each reactant to find the limiting…

Q: In the following reaction, how many moles of CH3OH are required to produce -3841 kJ of heat? 2 CH;OH…

A: Given data,Enthalpy=-1280kJThe reaction involved is:2CH3OH(l)+3O2(g)→2CO2(g)+4H2O(g)

Q: The combustion of one mole of benzene, C6H6, in oxygen liberates 3268 kJ of heat. The products of…

A: Given,  The combustion of one mole of benzene, C6H6, in oxygen liberates 3268 kJ of heat  The…

Q: If 801 J of heat is available, what is the mass in grams of iron (specific heat = 0.450 J/g °C) that…

A: For the first question simply it follows the  q= ms∆t equation.   For the second one it is the case…

Q: If 601 J of heat is available, what is the mass in grams of iron (specific heat = 0.450 J/g.°C) that…

A:

Q: When octane (C8H18, density = 0.699 g/mL) undergoes complete combustion, it provides energy…

A: Interpretation- To determine the amount of heat (in KJ)  produced by the amount of octane needed to…

Q: Hydrogen sulfide, H2S, is produced during decomposition of organic matter. When 0.3620 mol H2S burns…

A: Given :-  H2S (g) + O2 (g) → SO2 (g) + H2O (g)  ∆H = -187.5 kJ  To calculate :-  Given heat into…

Q: 1. A thermometer placed in a solution undergoing a chemical reaction indicates an increase in…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: If the same amount of heat is supplied to 10.0 g each of aluminum, iron, and copper (all at 15…

A: We have to find which metal will reach the highest temperature: Given: Mass of all the three…