1. The combustion of ethene, C2H4, is an exothermic reaction. Use the information below to determine the amount of energy given off when 2.3 moles of ethene is combusted. C2H4 + 3 O2 → 2 CO2 + H2O AH= - 1390 kJ

Q: A chemist measures the energy change AH during the following reaction: C,H3(g)+50,(g) → 3…

A: The given reaction is : C3H8(g)  +  5O2(g)  →  3CO2(g)  +  4H2O(l)            ∆H=-2220 kJ

Q: The reaction of 2SO3(g)=2SO2(g)+O2(g) has an enthalpy change of 198kJ. How many grams of sulfur…

A: From the given reaction we can see that when 2 moles of SO2 is produced, 198 KJ of energy is…

Q: A chemist measures the energy change AH during the following reaction: C;Hg(9)+5O,(g) →3…

A: We have to find whether this reaction is exothermic or endothermic. Also, we have to find the amount…

Q: A chemist measures the energy change AH during the following reaction: Cl,(9)+H,(9) → 2 HCl(g)…

A: A chemical reaction in which heat releases is known as exothermic reaction  A chemical reaction in…

Q: A chemist measures the energy change ΔH during the following reaction:…

A: The reaction is, C3H8 + 5O2 -----> 3CO2 + 4H2O ∆H = -2220 kJ Since the change in enthalpy is…

Q: Silane, SiH4, burns according to the reaction:   SiH4(g) + 2O2(g) à SiO2(s) + 2H2O(l) ΔH ° = –1429…

A: Balanced chemical equation: SiH4(g) + 2O2(g) -------> SiO2(s) + 2H2O(l) ΔH ° = –1429 kJ This…

Q: Carbon occurs in two forms, graphite and diamond. The enthalpy of the combustion of graphite is…

A: given,  1) combustion of graphite C (graphite) + O2(g) → CO2(g) ,   ΔH1 = -393.5 KJ     -1 2)…

Q: A chemist measures the energy change AH during the following reaction: 2 NO,(9) → N,O4(9) AH=-55.3…

A: Chemical reactions are associated with the liberation or intake of energy. If the energy is added to…

Q: How many grams of octane CgH18 must be burned to produce 3.25 X 10" kJ of heat? 2 C3H18 + 13 O2- 16…

A: In this problem, we have to calculate the mass of octane burnt during combustion to provide 3.25×104…

Q: A chemist measures the energy change AH during the following reaction: 2 Fe, O3(s) 4 FeO(s)+O,(9)…

A: We have to predict the nature of reaction, heat absorbed, amount of heat absorbed.

Q: A chemist measures the energy change AH during the following reaction: Cl,(g)+H,(g) → 2 HCl(g)…

A: Exothermic reactions are those in which energy is released.

Q: Consider the combustion of butane: 2C4​H10​(g)+13O2​(g)-->8CO2​(g)+10H2​O(l), ΔHrxn = −2878 kJ/mol…

A: The enthalpy of combustion of a substance indicates the enthalpy change produced as a result of the…

Q: A chemist measures the energy change AH during the following reaction: 2 NH3(g) → N,(9)+3H2(g)…

A: The balanced reaction taking place is given as, => 2 NH3 (g) -------> N2 (g) + 3 H2 (g)…

Q: If 1452.8 kJ of energy are released when two moles of CH3OH are combusted, which of the following…

A: Given: Amount of energy released in the combustion of 2 moles of CH3OH = 1452.8 KJ. And mass of…

Q: The combustion of butane, C4H10, is given as: 2C4H10(g) + 1302(g) → 8CO2(g) + 10H20(1), AH° = -5314…

A:

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Q: A chemist measures the energy change AH during the following reaction: 2 NO,(9) – N,0,9) AH=-55 3 kJ…

A: Given reaction;  2NO2 (g)  ----->  N2O4 (g)  ∆H = -55.3 KJ/mol 1. This reaction will be…

Q: Iron converts to iron (iii) oxide in this reaction: 2 Fe (s) + 3 CO (g) -> Fe2O3 (s) + 3 CO2 (g)…

A:

Q: A chemist measures the energy change AH during the following reaction: C;Hg(9)+50,(9) –→ 3…

A: Given reaction: C3H8 (g) + 5 O2 (g) → 3 CO2 (g) + 4 H2O (l)             ∆H = -2220 kJ We have to…

Q: The combustion of butane, C4H10, is given as: 2C4H10(g) + 1302(g) 8CO2(g) + 10H,O(I), AH° = -5314…

A: Given values -> 2C4H10+13O2-> 8CO2+10H2O ∆H°= -5314kj

Q: Here is the reaction equation for the combustion of butane, which is an exothermic reaction. 2…

A: Exothermic  reaction that releases energy from the system to its surroundings

Q: Can a chemical reaction ever give off more energy than was originally contained in its reactants?

A: According to law of conservation of energy, energy can neither be created nor be destroyed. It can…

Q: A chemist measures the energy change AH during the following reaction: 2 HgO(s) → 2 Hg(1)+O2(g)…

A: Atomic mass of Hg = 200.6 g/mol Atomic mass of O = 16 g/mol.

Q: The reaction for the combustion of propane is…

A: In the given question, a reaction is given in which we have to determine the amount of heat released…

Q: A chemist measures the energy change AH during the following reaction: CH (9)+20,(9) →…

A:

Q: A chemist measures the energy change AH during the following reaction: CH,(9)+20,(9) →…

A: Exothermic reactions are those in which energy is released in the form of heat. And the standard…

Q: Is the reaction exothermic or endothermic will any he be released or absorbed. If you said heat will…

A: Given:Mass of CH4 = 87.8 g.Chemical reaction:

Q: A chemist measures the energy change AH during the following reaction: 2 NO,(0) - - N,O,(0) AH=-55.3…

A: A reaction is a conversion of from reactant to product by the absorption of energy of emission of…

Q: A chemist measures the energy change AH during the following reaction: 2 H,O(1) → 2 H,(g)+O2(g)…

A:

Q: 2Mg(s) + O2(g) - - 2MgO(s) AH°, = -1203.4 kJ rxn How much energy is transferred when 36.4 g of…

A: Given :- 2Mg(s) + O2(g) → 2MgO(s)  ∆H°rxn = -1203.4 kJ  To calculate :- amount of energy transferred…

Q: 4Al(s) + 3O2(g) ⟶ 2Al2O3(s)    ΔH = -3,351.4 kJ What is the heat flow when 89.23 grams of aluminum,…

A:

Q: 20) Using the following equation for the combustion of octane, caleulate the heat asociated with the…

A:

Q: A chemist measures the energy change AH during the following reaction: C3H3(9)+502(9) 3…

A:

Q: A chemist measures the energy change AH during the following reaction: 2 Fe,O3(s) → 4 FeO(s)+O2(g)…

A: Exothermic reaction: If the energy is released in the reaction. Endothermic reaction: If the energy…

Q: Consider the reaction B2H6(g) + 3 O2(g) → B2O3(s) + 3 H2O(g) ∆H = -2035 kJ How much heat is…

A: Using the concept of limiting reagent, we can easily find the number of moles of the reaction that…

Q: There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of…

A: The standard enthalpy of a reaction is the change in the enthalpy which occurs in a system when the…

Q: H2 and F2 react according to the following equation, forming HF. H2(g) + F2(g) → 2HF(g); ΔH° = –271…

A: According to thermodynamics, we deal with two types of reactions: Exothermic: The type of reaction…

Q: A chemist measures the energy change AH during the following reaction: 2 Fe,03(s) → 4 Fe0(s)+O,(g)…

A: Given:

Q: A chemist measures the energy change AH during the following reaction: C,Hg(9)+50,(9) → 3 CO 2(g)+…

A: Answer :-  a) Exothermic  b) Yes, released  c) 1.83 × 103 kJ…

Q: Calculate the amount of heat released from combustion of 1g of wood. The heat capacity of the bomb…

A: Heat released in combustion is the driving force of a fire, the larger the heat released by a…

Q: C2H;OH (1) + O2 (g) → CO2 (g) + H2O (1) AH,ræn = –1418 k mol How many grams of CO2 were produced if…

A: An equation representing the combustion reaction of ethanol that give CO2 and H2O, for which the…

Q: 9. Consider the reaction, 3 NO2(3) + H2O(1) 2 HNO3(aq) + NO(g), where AH = -137 kJ. How many…

A: The amount of heat released when 92.3 g of NO2 reacts according to given reaction is to be…

Q: Consider the following reaction.  CH4 + 2O2 -> 2H2O + CO2      ΔH = -890 kJ/mol If 45 g of methane…

A:

Q: A chemist measures the energy change AH during the following reaction: C;Hg(9)+50,(g) → 3…

A: Exothermic reaction : If in any reaction,ΔH comes out to be negative, then the reaction is said to…

Q: The combustion of methane is described by the following balanced chemical equation. CH4(g) + 2O2(g)…

A: Given : Enthalpy change of reaction ∆ H = - 34.5 kj We need to find if reaction is exothermic Or…

Q: When 1 mole of CH4(g) reacts with H2O(g) to form H2(g) and CO(g) according to the following…

A: Answer: Endothermic Since 206 kJ of energy is absorbed,  Energy abosrbed process are called…

Q: A chemist measures the energy change AH during the following reaction: Cl(g)+H2(g) → 2 HCl(g)…

A: Given reaction: Cl2 (g) + H2 (g) → 2HCl (g)     ∆H = -184. kJ We have to find whether this reaction…

Q: When a 0.740-g sample of trinitrotoluene (TNT), C,H,N‚O§, is burned in a bomb calorimeter, the…

A: Mass given = 0.740 g  Heat capacity = 3.35 KJ°C-  Initial Temperature = 23.4 °C  Final temperature =…

Q: Nature favors exothermic reactions because after such a reaction a. energy previously held…

A:

Q: A chemist measures the energy change AH during the following reaction: Cl,(9)+H,(g) → 2 HCl(g)…

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.