Hydrogen sulfide, H2 S, is produced during decomposition of organic matter. When 0.4300 mol H2S burns to produce SO2 (g) and H20(g), -222.7 kJ of heat is released. What is this heat in kilocalories? Heat kcal

Q: What is the final temperature of a 56 g sample of water if the initial temperature was 4.0°C and it…

A: Given: Mass, m = 56 g Heat, q = 3046 J Specific heat of water, c = 4.184 Initial temperature, Ti =…

Q: In the following reaction, how much heat is generated when 3.21 moles of CH4 are burned? CH4 (g) + 2…

A: CH4g+2O2g→ CO2g+2H2Og                       △ H = 802KJmolAs 1 mole of CH4 heat released =…

Q: Which of the following is true about an exothermic reaction? O The number of moles of products is…

A: ''In exothermic reaction, heat is released" therefore heat of reaction is negative

Q: 2. A solution is formed by combining 10 mL of solution A and 40 mL of solution B. Find out the heat…

A: We know that  Heat change of the reaction is  Qreaction = - Q calorimeter  = - m × C × ∆T And, the…

Q: Combustion reactions are exothernic. The heat of reaction for the combustion of cyclohexane, CH2, is…

A: Heat of reaction for combustion of cyclohexane C6H12= 936.8 Kcalmol

Q: Methane, CH4, is a major component of marsh gas. When 0.5000 mol methane burns to produce carbon…

A: Given : Heat = -445.1 KJ

Q: 4.33g sample of an unknown salt (MM=116.83g/mol) is dissolved in 150.00g water coffee cup…

A:

Q: The reaction of hydrogen and oxygen gases produces 18.0 g of water and releases 68.2 kcal of heat.…

A: Endothermic reactions can be defined as the reaction which involves the intake of heat while…

Q: ellular respiration is a process that produces energy for the cell and is about 40% efficient. If…

A: The efficiency of the process of cellular respiration is = 40 % The total energy used in cellular…

Q: The thermite reaction, Fe2O3 + Al Al2O3 + Fe produces so much heat that the Fe product melts. This…

A:

Q: 2. What is the specific heat of a metal whose mass is 94.5 g and the temperature changes from 48 °C…

A: Consider the given information is as follows; Mass of the metal = 94.5 g Initial temperature T1…

Q: 175 g of water was heated from 15°C to 88°C.  How many kilocalories (kcal) of heat were absorbed by…

A:

Q: The specific heat of a 70 g sample is 0.069 J/(g·K). If it absorbs 96 J when it is heated from a…

A: Heat energy required to raise the temperature of body of 1gram of  mass to 1°c is known specific…

Q: How many kilojoules of heat are absorbed when 40.7 g of MgO(s) is decomposed into Mg(s) and O2(g) a…

A: The reaction given is, => 2 Mg (s) + O2 (g) ------> 2 MgO (s)                          ΔH =…

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: What is the specific heat of 54.8 g of a substance that releases 445 Joules of heat upon cooling…

A: q = mc∆T  q is the amount of heat energy released m is the mass of substance  c is the specific heat…

Q: How much heat (in kilocalories) is released from the combustion of 5.00 g of ethanol?

A: The mass of ethanol given = 5.00 g The standard specific heat of combustion of ethanol is Hc = 7.1…

Q: When a 4.25 g sample of solid ammonium nitrate dissolves in 60.0 g of water in a coffee- cup…

A: 1) Since the temperature of the water in coffee-cup calorimeter is decreasing from 22 to 16.9 oC…

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: A 1445 kg car is traveling down the road at 96.6 km/h. While traveling at this rate of speed, what…

A: Given : Mass of car = 1445 kg Speed of car = 96.6 km/hr  To calculate :- Kinetic energy (in kJ)

Q: A 22.0 g block of copper at 45'C absorbs 2.50 kJ of heat. Given the specific heat of Cu is 0.385…

A: given :-  mass of Cu = 22.0 g  specific heat of Cu = 0.385 J/g°C  initial temperature = 45 °C  heat…

Q: When methanol, CH3OH, is burned in the presence of oxygen gas, O₂, a large amount of heat energy is…

A:

Q: If 31,500J of heat is used to warm 750g of water, what is the temperature change? The specific heat…

A: According to the law of calorimetry,  Heat absorbed by an object can be written as,  Q = ms∆T Where,…

Q: What is the kinetic energy of a 63.4 gram bullet moving at a velocity of 318 meters per second?…

A: Given values are, Mass ,m =63.4 g =0.0634 kg Velocity,v= 318 m/s

Q: en the thermochemical equation : O2(g) + O₂(g) Ⓡ2SO3(g), DH rxn= -198 kJ/mol, w much heat is evolved…

A: Given: 2SO2(g)+O2(g)→2SO3(g)   ∆Horxn=-198 kJ/mol Mass of SO2 is 600 g To find: Heat evolved

Q: How much energy (in Calories, ie. kcal) was produced by burning the Goldfish?  (Specific Heat of…

A: Mass of water = 100.116 g Change in temp. = 5.1°C = 5.1 K Specific Heat Capacity of water = 4.184…

Q: What is the specific heat of an unknown substance if a 2.50 g sample requires 12 calories as its…

A: Firstly, we have to calculate specific heat using the formula: Q=mc ΔT Then, we will compare it with…

Q: Octane (C8H18) is a component of gasoline that burns according to the following equation:…

A: the enthlpy change during the combustion of 1 mole of the substance is known as enthalpy of…

Q: If 1001 J of heat is available, how many grams of iron (specific heat = 0.45 J/g･°C) can be heated…

A: The equation is:

Q: What is the specific heat of a substance if 373 J of heat is required to raise the temperature of a…

A: Q = m . s . ∆T Where, Q = heat required; m = mass of substance; s = specific heat and ∆T =…

Q: Hydrogen sulfide is produced during the decomposition of organic matter. When 0.5380 mol H2S burns…

A: Given: H2S burns to produce SO2(g) and H2O(g) with heat release of -278.7 kJ

Q: rogen sulfide, H2S, is produced during decomposition of organic matter. When 0.4190 mo H2S burns to…

A: Given, Heat released = -217.0 KJ

Q: Is the solution of ammonium chloride in water an exothermic or endothermic process.

A: When ammonium chloride is dissolved in water, it produces an endothermic reaction, i.e. energy is…

Q: A potato chip is burned in an incomplete combustion reaction, and the heat energy is transferred to…

A: The mass of water is determined as follows. mwater=dwater×Vwater=1.00 g/mL×150 mL=150 g

Q: heat

A:

Q: The reaction for the combustion of propane is   C3H8(g)+5O2(g)⟶3CO2(g)+4H2O(l)…

A: Given combustion reaction;  C3H8(g) + 5O2(g) ---> 3CO2(g) + 4H2O(l)  delta(H) = -526.3 kcal/mole…

Q: The combustion of one mole of liquid ethanol, CH3CH2OH,produces 1367 kJ of heat. Calculate how much…

A: The chemical reaction for the combustion of ethanol is represented 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: The specific energy and density of gasoline is -47.3 MJ/kg and 716 kg/m3, respectively. What is its…

A: Specific energy: It is the energy required for one unit of mass. Energy density: The amount of…

Q: When 1 g of water evaporates, the organism gives off 0.58 kcal of heat. At a comfortable…

A: Given: 1 g of water gives 0.58 kCal of heat. Rate of water evaporation = 35 m/h density of water = 1…

Q: specific heat

A:

Q: 2. A solution is formed by combining 10 mL of solution A and 40 mL of solution B. Find out the heat…

A: 2). given : 10 ml solution of A  40 ml solution of B

Q: When sulfuric acid is poured on sugar the volume expands, it turns black and gets very hot. Which of…

A: A reaction is said to be exothermic when heat is liberated during the process.

Q: Nitromethane (CH3NO2), sometimes used as a fuel in drag racers, burns according to the following…

A:

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: A 8.17 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee…

A: Mass of salt sample = 8.17 g Mass of water = 150 g Total mass of solution ( m ) = 8.17 g + 150 g =…

Q: 1.     Ammonia can be generated by heating together the solids NH4Cl and Ca(OH)2. Other products of…

A: Note: As per our guidelines, we are supposed to answer only one question. Kindly, repost other…

Q: 78.50 grams 2.30 C 105 cal (2) (3) Mass of Metal B ATemperature Heat lost/gained by Metal B Specific…

A: