21. Consider the following reaction.  CH4 + 2O2 -> 2H2O + CO2      ΔH = -890 kJ/mol If 45 g of methane combust, then what amount of energy is released?  A.40050 kJ B.40.05 kJ C.2503 kJ D.2.503 kJ

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

A:

Q: Consider the following reaction.  CH4 + 2O2 -> 2H2O + CO2      ΔH = -890 kJ/mol If 305 kJ of…

A: Given reaction is CH4 + 2O2 —> 2H2O + CO2      ΔH = -890 kJ/mol 2 mol H2O produced releases 890…

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 205 g sample of gold at some temperature was added to 22.3 g of water. The initial water…

A: Since the temperature of the water is increased, water has received heat and gold has emitted heat.…

Q: Silane, SiH4, burns according to the reaction, SiH4 + 2O2 → SiO2 + 2H2O, with ΔH° = –1429 kJ. How…

A: In the question, negative sign of ∆H° means energy is released during the burning of SiH4  You can…

Q: Consider the following chemical reaction: C5H12(l) + O2(g) ------------> CO2(g) + H2O(g) Calculate…

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Q: 4. Consider the reaction 2 H2 (g) + O2 (g) → 2 H2O (g) having AH = -484 kJ/mol. Determine the…

A: In the given case, hydrogen is the limiting reagent for the reaction because 4 mol of hydrogen gas…

Q: A chemist measures the energy change AH during the following reaction: CH,(g)+20,(g) CO,(g)+2H,0(1)…

A: The balanced reaction taking place is given as,

Q: Hydrogen peroxide can decompose to water and oxygen by the reaction 2 H2O21l2 ------>2 H2O1l2 +…

A: 2*36 g H2O2 release 192 KJ heat

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: 4. Consider the reaction 2 H2 (g) + O2 (g) → 2 H2O (g) having AH = -484 kJ/mol. Determine the…

A: Interpretation: The reaction 2H2 (g) + O2 (g) → 2H2O (g) having ∆H = -484 kJ/mol. The magnitude of…

Q: A chemist measures the energy change AH during the following reaction: 2 H,O(1) → 2 H,(9)+0,(g)…

A: GIVEN, reaction : 2H2O(l) →2H2(g) +O2(g)       ∆H = 572kJ

Q: A chem easures the energy change AH during the following reaction: 2 NH3(g) → N,(9)+3H,(g) AH=160.…

A:

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

A:

Q: Consider the following chemical reaction: C5H12(l) + O2(g) ------------> CO2(g) + H2O(g) Calculate…

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

A:

Q: A chemist measures the energy change AH during the following reaction: 2 HgO(s) → 2 Hg(1)+0,(9)…

A: When a reaction releases heat during the reaction, the reaction is termed exothermic which can be…

Q: The specific heat capacity of silver is 0.24 J/°C•g. a. Calculate the energy required to raise the…

A:

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

A:

Q: The specific heat capacity of silver is 0.24 J/°C g. a. Calculate the energy required to raise the…

A: Given: Specific heat capacity of silver = 0.24 J/°C g

Q: When 1.00 g of AgCl is formed by the reaction in a coffee cup calorimeter, the temperature of 20.0 g…

A: Heat absorbed by water can be calculated by using the formula:Q = m.Cp.∆T where, Q = heat absorbed/…

Q: C(graphite) + O29) CO 2(9) AH° = -11020 kJ/mol For the reaction: Choose... Choose... -1.41x 103 -523…

A: Since u have  posted multiple question we will solve the first question for you. To get the…

Q: The combustion of 0.1599 g benzoic acid increases the temperature of a bomb calorimeter by 2.56°C.…

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: A chemist measures the energy change AH during the following reaction: 2 H,0(1) → 2 H,(g)+O,(g)…

A: Given;

Q: true? (a) This reaction is endothermic. (b) Reacting 2 moles N2, 6 moles O2, and 2 moles H2 would…

A: As □H is negative therefore reaction is exothermic in nature.  As we know, enthalpy is extensive…

Q: How much energy is evolved during the formation of 120 g of Fe, according to the reaction below?…

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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: When 56.8 g of lead reacts with 3.50 L of oxygen gas, measured at 1.00 atm and 25.0°C, 60.1 kJ of…

A: The enthalpy change of this reaction can be calculated by finding the limiting reactant amobg 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: Weight of a compound divided by its molecular mass (MM) gives the moles of the compound.

Q: 14. Given the 2 reactions below: 2NOE I. 2NO + 0z8) II. 2Li,Og + 1192 KJ → 4Lig Which statement is…

A: The energy difference of the products and reactants is known as the energy change of a reaction.

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

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Q: 2. When 4.98 g of NaOH was dissolved in 49.72 g of water in a calorimeter at 23.7°C, the temperature…

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Q: 9) The standard heat of combustion of ethanol, C,I ethanol. How much heat (in kJ) would be liberated…

A: We will use unitary method to get the answer

Q: For the reaction  SOCl2 + H2O --- 2HCL + SO2        H=482 KJ What mass of HCl is produced when 2250…

A: Since when 2 moles of HCl is produced, energy absorbed = H = 482 KJ  Hence energy absorbed per mole…

Q: The combustion of 0.1559 g benzoic acid increases the temperature of a bomb calorimeter by 2.52°C.…

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Q: Reaction 1: H2(g)+Cl2(g)⟶2HCl(g)ΔH=−184.6 kJ  Reaction 2: 2OF2(g)⟶O2(g)+2 F2(g)ΔH=−49.4 kJ…

A: Given , Reaction : 2OF2(g) →O2(g) +2F2(g)    ∆H=-49.4 kJ

Q: Consider the reaction   2H2+O2⟶2H2O        Δ?rxn=−484 kJ   Which answer best describes the…

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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: 2Al(s) + 3Cl2(g) ----à 2AlCl3(s);    H = –1390.81 kJ  How much heat is produced/required when 10.0…

A: Moles of AlCl3 is calculated as,

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

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

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Q: Consider the reaction:B2H6(g) + 3O2(g) --> B2O3(s) + 3H2O(g) ΔH = -2035 kJCalculate the amount of…

A: Standard enthalpy change for given equation is -2035kJ recorded is shown above.  Calculate amount of…

Q: For the chemical reaction below, which statement is true about the reaction? N2H4 (1) + O2 (g) → N2…

A: Work done prediction for a Chemical reaction involving gaseous species can be done as follows:

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

A: ΔH of the reaction is determined by bond breaks and bond formation of the reaction. When the heat…

Q: A hot (158°F) of metal has a mass of 250 g and a specific heat of 0.25 cal/g·C°. John drops the…

A: We have to calculate the equilibrium temperature.

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

A: Given 2NO2 (g) →N2O4 (g) ΔH = -55.3 kJ

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

A: