a. Hydrogen cyanide is used in the manufacture of clear plastics such as Lucite and Plexiglas. It is prepared from ammonia and natural gas (CH4). 2NH3 (9) + 302 (9) + 2CH4 (9) → 2HCN(g) + 6H2O(g) The reaction evolves 939 kJ of heat per 2 mol HCN formed. Is the reaction endothermic or exothermic? endothermic O exothermic b. If 8 mol of HCN is produced, what is the value of q? kJ

Q: The thermochemical equation for the combustion of methanol is CH3OH (g)  +  3/2 O2(g)  →  CO2(g)  +…

A: Here we are required to find the heat produced on burning 5 gm of methanol

Q: etermine the amount of heat (in kJ) given off when 1.86 x 10ª g of NOz are produced ccording to the…

A: Given, Mass of NO2 = 1.86 x 104 g  ∆H = -114.6 KJ/mol Molar mass of N = 14 g/mol Molar Mass of O =…

Q: Nitric acid is neutralized with potassium hydroxide in the next reaction. HNO3(aq) + KOH(aq) →…

A: We will first determine the mass of solution by adding the volume and multiplying density. And we…

Q: Nitric acid is produced from nitrogen dioxide. An old process for making nitrogen dioxide employed…

A: The given reaction is

Q: The amino acid glycine, C2H5NO2, is one of the compounds used by the body to make proteins. The…

A:

Q: 2 C4H10(g) + 13 O2(g) --> 8 CO2(g) + 10 H2O(l) change in H = -5756.84 kJ The enthalpy change during…

A: The objective of the question is to find out the mass of CO2 produced in a reaction with a given…

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: Guideline message: In case of multiple subparts, ideally the first 3 subparts should be answered, if…

Q: How much heat (in kJ) is absorbed in the process of making 0.877 mol of CF, from the following…

A: The given chemical reaction is as follows,C(s)+2F2(g)→CF4(g)       ∆H° =141.3 kJmolnumber of moles…

Q: CS2 and 10.0 g Cl2 reacts by the followi CS2(g) + 3Cl2 (g) AH = -230. kJ

A: Given, Mass of Cl2 = 10 g Mass of CS2 = 10 g Molar mass of CS2 = 76 g/mol Molar mass of Cl2 = 71 g…

Q: How much heat is released by the combustion of 206 g of hydrogengas? Δ H comb = -286 kJ/mol

A: Given ΔHcomb = -286 kJ/mol Heat released by combustion of 1 mole of hydrogen ( 2 g of hydrogen) =…

Q: Given the following reactions N2 (g) + O2 (g) → 2NO (g) 2NO(g) + O2(g) → 2N (g) the enthalpy of…

A:

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: 4. When backpacking in the wilderness, hikers often boil water to sterilize it for drinking. Suppose…

A: Given : Volume of water = 35 L                                = 35 × 10³ mL initial temperature of…

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

A: The objective of the question is to calculate the amount of heat released by the complete combustion…

Q: For the following combustion reaction CH3CH₂CH₂COOH(1) +502(g) → 4CO₂(g) + 4H₂O(g) AH = -2.18 × 10³…

A:

Q: Propane is a common fuel used in portable stoves. If a gas canister contains 0.283 dm3 of propane,…

A: Given, C3H8 (g) + 5 O2 (g) ➝ 3 CO2 (g) + 4 H2O (g)              ∆H = -2221KJ/mol Here, (-) sign…

Q: The specific heat of water is 4.18 J/g-K. AHsolution When a 9.15-g sample of gaseous hydrogen…

A:

Q: Hydrazine, N2H4, is a liquid used as a rocket fuel. It reacts with oxygen to yield  nitrogen gas and…

A: Molar mass of hydrazine (N2H4) = 32.045 g/mol

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

A:

Q: In a constant-pressure calorimeter, 60.0 mL of 0.300 M Ba(OH), was added to 60.0 mL of 0.600 M HCI.…

A: The balanced reaction taking place can be written as, => 2 HCl (aq) + Ba(OH)2 (aq) --------->…

Q: Given the following two reactions and their enthalpy changes,             2 ClO2 (g)   -->   Cl2 (g)…

A:

Q: d. Calculate the amount of heat released w to the following chemical equation (5 m

A:

Q: Given the following two reactions and their enthalpy changes,             2 ClO2 (g)   -->   Cl2…

A:

Q: Titanium reacts with iodine to form titanium(III) iodide, emitting heat, via the following…

A: It looks like there was a typo in the chemical equation provided. The correct balanced chemical…

Q: Consider the reaction of sodium metal and water. 2Na(s) + 2H20(1) → 2NaOH(aq) + H2 (g) AH = -369 kJ…

A: 2Na(s)+2H2O(l) --->2NaOH(aq)+H2(g) ∆H = -369KJ On reversing the direction of reaction, sign of…

Q: mass of carbon dioxide

A:

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: ane (C8H18) is a component of gasoline and combusted ac

A: Amount of energy released or absorbed during a chemical reaction  If energy is released then heat of…

Q: You just got a job teaching chemistry at a local community college. Your new boss wants you to…

A: Given: Temperature change = 4.00 oC Mass of the solution = 85.0 g

Q: Methanol, CH3OH (molar mass: 32.042 g/mol), reacts with O2 and can be used as fuel according to the…

A: Methanol reacts with oxygen to form carbon dioxide and water. The equation for the balanced chemical…

Q: In a constant-pressure calorimeter, 70.0 mL of 0.340 M Ba(OH), was added to 70.0 mL of 0.680 M HCI.…

A:

Q: The reaction between sodium metal and chlorine gas produces 822 kJ of heat energy for every chlorine…

A:

Q: Measurements show that the energy of a mixture of gaseous reactants decreases by 178. kJ during a…

A:

Q: ΔH = +572 kJ for the decomposition of water by the reaction 2 H2O() → 2 H2(g) + O2(g). How many…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: Consider the following reaction: 2Mg(s)+O2(g)⟶2MgO(s)                   ΔH∘=−1203 kJ What mass (in…

A: From stoichiometric equation, we will calculate the number of moles of magnesium that must be…

Q: 48.2 mL of a solution of HCl is combined with 110.7 mL of 1.35 M NaOH in a calorimeter. The reaction…

A: Given: Volume of HCl solution = 48.2 mL = 0.0482 L                               (Since 1 L = 1000…

Q: Which of the following represents an endothermic reaction? H2(g) + F2(g) –→ 2 HF(g) AH= -542 kJ C(s)…

A: The question is based on the concept of chemical thermodynamics. we have to identify the endothermic…

Q: What mass of galena (PbS) is converted to lead (II) oxide if 200 kJ of heat are produced?

A:

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

A:

Q: Calculate enthalpy of reaction given reaction enthalpies for proposed steps in a process. K+(g) +…

A:

Q: Determine the mass of water that is produced when 673 kJ of heat is absorbed in the following…

A: We have to calculate mass of water produced  Given : heat = 673 kJ

Q: LP gas burns according to the exothermic reaction: C3H8(g)+5 O2(g)→3 CO2(g)+4 H2O(g)ΔH∘rxn=−2044 kJ…

A: Given:The balanced chemical equation:C3H8(g)+5 O2(g)→3 CO2(g)+4 H2O(g)ΔH∘rxn=−2044 kJVolume of water…

Q: What quantity of heat (in kJ) will be released if 0.1673 mol of NH3 are mixed with 0.200 mol of O₂…

A:

Q: Consider the following reaction: 2CH3OH (g) 2CH4 (g) + 02 (g) AH = 252.8 kJ. Atomic weights: C = 12…

A: