If 200 kJ of heat are supplied, how many grams of NO can be produced? N2(g) + O2(g)→ 2 NO(g) AH = 180.6 kJ/mol O 66.5 g 54.2 g O 30.1 g O 2.21 g

Q: The formation of rust (Fe2O3) from solid iron and oxygen gas releases -1.7  103 kJ. 4 Fe(s) + 3…

A: The question is about to calculate the mass of rust formed when 150 kcal are released -

Q: Some commercial drain cleaners contain two components; sodium hydroxide and aluminum powder. When…

A:

Q: In order to produce 823 kJ of heat, how many grams of H2 must be combusted with excess O2? (molar…

A:

Q: Which of the following equations is an exothermic reaction?   a H2 (g) + ½ O2 (g) → H2O (l) ΔH =…

A: Exothermic reaction Reaction in which Energy is released so it is exothermic reaction.

Q: How much heat is produced by the combustion of 4.67g of magnesium (24.30 g/mol)? Mg(s) + 1/2 O2(g)…

A: Here we have to apply mole concept, first we need to find for 1 gram Mg combustion how much energy…

Q: The energy diagram shown represents the chemical reaction between solid ammonium c octahydrate:…

A: The heat absorbed is to be calculated

Q: Consider the following reaction: D2(g) + A2(g) → 2AD(g) AH = 237.4 kJ If 72.4 kJ of heat are…

A: The objective of the question is to find out how many grams of AD should be produced when 72.4 kJ of…

Q: What is the enthalpy change when 189 g of NH3 are produced? The standard enthalpy of formation of…

A: Standard enthalpy of formation :- The enthalpy change accompanied the process of formation of one…

Q: Camels store a fat called tristearin (C7H₁006) in their humps. The breakdown of tristearin provides…

A:

Q: 1.The combustion of methane gas, the principal constituent of natural gas, is represented by the…

A: Recall the given reaction CH4g + 2 O2g → CO2g + 2 H2Ol     ,  ∆H°=-890.3 kJ We have to find the mass…

Q: Determine the amount of heat (in kJ) associated with the production of 1.76 × 104 g of NO2 according…

A: Molar mass of nitrogen dioxide is 46 g/mol

Q: The principal component of LPG is butane, C4H10(g). If combustion of 1 mole of butane produces 126…

A:

Q: The combustion of CH4 releases 890.4 kJ/mol of heat according to the equation: CH4(g) + 2 O2(g) -->…

A:

Q: Classify the reaction endothermic or exothermic and give the change in enthalpy of the reaction. 2…

A: Given: Reaction: 2 SO3 (g)→ 2S (s)+ 3O2 (g) Δ H=798 kJ

Q: Thermite reaction can be used to produce molten iron for welding railway tracks together. Fe2O3(s)…

A: the solution is as follows:

Q: When hydrogen and oxygen are burned to produce water, heat is produced at the rate of 58 kcal/mole…

A: Given, 1 mol H2O = 6.022 ×1023 molecules  Heat produced = 58 Kcal/mol

Q: How much heat is absorbed during production of 102 g of NO by the combination of nitrogen and…

A: Molar mass NO = 30.01 g/mol

Q: When hydrogen and oxygen are burned to produce water, heat is produced at the rate of 58 kcal/mole…

A: Given: Heat produced per mole of water = 58 Kcal/mol of water. And 1 mole of water contains = 6.02 ×…

Q: Some commercial drain cleaners contain a mixture of sodium hydroxide and aluminum powder. When the…

A: The equation we have here is as follows. 2NaOHaq+2Als+6H2Ol→2NaAlOH4aq+3H2g From this equation it is…

Q: In winemaking, microorganisms break down the sugar in grapes into ethanol (grain alcohol) and carbon…

A: The molar mass of ethanol = 46 g  2 moles of ethanol , which weights 92.16 g produces 16.6 kcal  of…

Q: when butane (C4H10) in a cigarette lighter undergoes combustion, it evolves 2880 kJ per mole of…

A: When butane (C4H10) in a cigarette lighter undergoes combustion, it evolves 2880 kJ per mole of…

Q: Al2O3(s) + heat → 2Al(s) + ½ O2(g) This reaction is    (endothermic / exothermic ).

A: An EXOTHERMIC thermochemical reaction equation is written as  Reactants ------> products + Heat…

Q: If 98.1 L of NO2 forms, measured at 35.0 °C and 639 mm Hg, what is the percent yield? Percent Yield…

A: The reaction is given and we have to find percent yield . To find that we have to apply ideal gas…

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: According to the following reaction, how many grams of hydrogen would be needed to produce 5.450 x…

A: In this question, we want to determine the mass of Hydrogen gas in grams unit.  You can see details…

Q: In the reaction below, how much heat is required for the creation of 38.2 g HBr? H2 + Br2 → 2 HBr ΔH…

A:

Q: For the highly exothermic reaction H2(g) + 1/2 O2(g) → H2O(g) qrx =DHrx = -242 kJ, What quantity of…

A: Given: no of moles of H2 =17.9molno of moles of O2 = 1.13 molThe reaction is:H2(g) + 1/2 O2(g) →…

Q: Iron can be converted to Fe2O3 according to the reaction below. How much heat (in kJ) is required to…

A: Iron can be converted to Fe2O3 according to the given reaction. Amount of heat (in kJ) required to…

Q: How much heat will be released when 6.44 g of sulfur reacts with excess O2 according to the…

A:

Q: When 13.99 mL of HCl of unknown concentration (but less than that of the base) are reacted with…

A: Given data: Volume of HCl used = 13.99 ml Volume of NaOH used = 15 mL Concentration of NaOH = 3.172…

Q: How much energy is required to decompose 1970 g of PCl3, according to the reaction below?     4…

A: The enthalpy of reaction when 4 moles of PCl3 decomposes is given as +1207 J. Hence the enthalpy of…

Q: 6. Calculate the amount of heat released when 1.26 x 104 grams of ammonia NH3 are produced according…

A: The given amount of ammonia is 1.26×104 g. The chemical reaction that takes place for the production…

Q: CaO + H2O ->Ca(OH)2      heat = -64.8kJ/mol, how much heat liberated when 7.15g CaO is dropped into…

A:

Q: Consider the following equation for the combustion of H₂: H₂(g) + 2O₂(g) →→ H₂O(g) +243 kJ In order…

A: The reaction : Heat  produced = 972 KJ .

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.