cyanide compounds such as sodium cyanide, NaCN, are especially useful in gold refining because they will react with gold to form a stable compound that can then be separated and broken down to retrieve the gold. Ore containing only small quantities of gold can be used in this form of "chemical mining." The equation for the reaction follows. 4Au + 8NaCN + 2H2O + O2 > 4NaAu(CN)2 + 4NaOH   Assuminga 79.6% yield in the conversion of gold to NaAu(CN)2, what mass of gold would produce 1.00 kg of NaAu(CN)2?

Q: Consider the following chemical reaction: N2 + O2 → 2 NO If 10.0 g of N2 reacts with excess oxygen…

A: The reaction given is: N2 + O2 → 2 NO Mass of N2 reacted with excess O2, mN2 = 10.0 g The molar mass…

Q: Calculate the equilibrium constant at 25 °C, for the cell reaction: Ni(s) / Ni²+ (aq) // Ag+…

A:

Q: 4. The enthalpy of fusion of anthracene (solute) is 28.8 kJ/mol and its melting point is 217 degC.…

A:

Q: Question 1 The reaction of Ammonia to Nitric Oxide is produced as a minor substance in a fertilizing…

A: To determine the flow rates and composition of each stream in the given diagram, let's…

Q: 5) Ethylene gas (25°C) and steam (30°C) and atmospheric pressure are fed to a reaction process in an…

A:

Q: A 1.0 L flask is filled with NO and O2 initially, and, after the reaction establishes equilibrium,…

A: The reaction for NO and O2 is given as:   All the reactants and products in this reaction are in…

Q: Many metals react with halogens to give metal halides. For example, iron reacts with chlorine to…

A:

Q: Calculate Kp for the reaction S(s) + 2 CO(g) SO2(g) + 2 C(s) At the temperature in question, 2 bar…

A: In thermodynamics, equilibrium constant Kp, the equilibrium constant is calculated from the partial…

Q: Hydrogen (H2) is produced by steam reforming propane (C3H9) in the following reaction: C3Hglg) + 3…

A: The stoichiometric coefficient is explained as the numbers written in front of any atom, molecules…

Q: A compound is found to contain 63.65 % nitrogen and 36.35 % oxygen by mass. A N204 B NO4 (c) NO2 D)…

A: Given data: Composition of nitrogen in a compound = 63.65 % by mass Composition of oxygen in the…

Q: Develop the net ionic equation for the reaction between hydrochloric acid solution and a solution of…

A: Given that there is reaction between HCl and sodium acetate then write net ionic equation

Q: 8. The dissolütión of NH&CIO4) in water is endothermic with AHsolution = 33.5- If you mol prepare a…

A: This problem is based on dissolution of NH4ClO4 Data given: Molality of the solution = 1.00 m…

Q: Calculate the AHO for the reaction: Fe³+ (aq) + 3OH(aq) Round your answer to 3 significant digits.…

A: following reaction is given in the question Fe3+ aq  +  3OH-aq    → FeOH3 s

Q: 20 moles of propane, C3H8, is burned with excess air. 80% of propane undergoes complete combustion…

A:

Q: Exereuse 1. 69 The total combustions of mole of Liquid methanol under Standard pressure and…

A: Moles of methanol = 1 molAmount of heat released during combustion at STP = 725.2 kJ/mol

Q: Calculate the concentration equilibrium constant Kc at 298 K for the reaction N2O4 (g) = 2 NO2 (g)…

A: Given: The given reaction is the formation of NO2 from N2O4 at 298 K. The equilibrium pressures…

Q: 2 C4H10 + 13 O2 → 8 CO2 + 10 H2O Using dimensional analysis calculate how many moles of water are…

A: The reaction is given as: 2C4H10 + 13O2 → 8CO2 + 10H2O   Mass of oxygen reacted, mO2 = 43 g The…

Q: Q1// Calculate change in standard enthalpy of formation AH (Fe203) and Standard Enthalpy of…

A: Calculating the standard enthalpy of formation:

Q: For the following reaction, CaCl2(aq) + 2NaHCO3(aq) → CaCO3(s) + H2O(l) + CO2(g) + 2NaCl(aq) If…

A: Given that, CaCl2(aq) + 2NaHCO3(aq) → CaCO3(s) + H2O(l) + CO2(g) + 2NaCl(aq) The mass of CaCl2 =…

Q: In a study of the thermal decomposition of lithium peroxide,     a chemist finds that, as long as…

A: Lithium peroxide is used in space technology because it absorbs carbon dioxide and liberates oxygen.…

Q: Q2// Calculate change in standard enthalpy of formation AH (Fe203) and Standard Enthalpy of…

A:

Q: If 65.0 kg of ammonia and 80.0 kg of oxygen are fed to a batch reactor, determine the limiting…

A: given mass of ammonia=65 Kg=6517=3.8235 Kmoles mass of oxygen=80 Kg=8032=2.5 kmoles from reaction:…

Q: If 22.5 g of NaOH is added to 0.800 L of 1.00 M Zn(NO₃)₂, what mass in grams of Zn(OH)₂ will be…

A: Given reaction: 2NaOH(aq)+Zn(NO3)2(aq)→Zn(OH)2(s)+2NaNO3(aq) Mass of NaOH added = 22.5g 0.800L,…

Q: The gas phase polymerization reaction of the propylene compound is as follows: 2 C3H6 (9) n-C6H12…

A: Reaction,Data,

Q: Calculate the enthalpy of the following chemical reaction: cs,(?) + 30,(g) --> Co,(9) + 2SO,(g)…

A: Given reactions are: 1. Cs+O2g→CO2g             ΔH10=−393.5 kJ2. Ss+O2g→SO2g             ΔH20=−296.8…

Q: Ethylene is produced by the dehydrogentaion of ethane according to the reaction: C₂H 6(8) →C.H +H 2…

A: Write the given reactions as follows: C2H6g → C2H4g + H2     .......1C2H4g + C2H6g → C3H6g + CH4g…

Q: 4FES2 + 150z – 2F€203 + 8S03

A: Sulphur trioxide gas is obtained by the combustion of FeS2 (pyrites)  4FeS2  +   15O2…

Q: If 100 grams of propane is burned, how many grams of H20 is produced ?

A: propane burns in this reaction  mass of propane = 100gm  calculate the amount of H2O produced in…

Q: 9. Gasoline is a complex mixture, assume gasoline is a mixture of 2,2,4-trimethylpentane (an isomer…

A: Given that there are two component mixed i.e isomer of octane and n-heptane x1 =87% =0.87 T =25 C…

Q: Ethanol can be produced by the direct hydration of ethylene with H2PO, at 300°C and 6.8 MPa…

A: Given data: Yield of ethanol = 92 % Single pass conversion = 13 % Amount of ethanol produced = 100…

Q: In a process for the manufacture of chlorine by direct oxidation of HCl with air over a catalyst to…

A: Basis: 100 moles of product stream The number of moles of components in the product stream nHCl,P =…

Q: Q1// Calculate change in standard enthalpy of formation AH (Fe203) and Standard Enthalpy of…

A: Step 1:-Enthalpy of formation is defined as the heat change when on mole of a new compound is formed…

Q: A mixed brine by electrolysing, a gaseous mixture is obtained at the cathode having the following…

A:

Q: Calculate the standard enthalpy of combustion for the reaction SiH,(9) + 2 0,(g) → sio,(9) + 2…

A: Given: The standard enthalpies of formation of each component present in the reaction are given as;…

Q: Formaldehyde (CH20) is produced industrially by catalytic oxidation of methanol (CH30H) according to…

A: Given data: Formaldehyde is produced by catalytic oxidation of methanol. % excess air = 80 %…

Q: A combustion process involves gaseous sulfur hexafluoride (SF6) and liquid lithium (Li). Determine…

A: At very low pressure  and at  temperature, a combustion process is done between gaseous and liquid…

Q: Many crude oils contain dissolved hydrogen sulphide  H2S  and carbon dioxide  CO2  that are referred…

A: To describe three methods or processes used to remove H2S and CO2 from fuel gases. We have described…

Q: Calculate the standard enthalpy of formation of NOCI (g) given the enthalpy of reaction: Use the…

A: Enthalpy of reaction is given.

Q: What does a ratio of 0.65385 O2 to NH3 mean about the reaction? There is no limiting reagent. O 02…

A: `From the reaction: ratio of O2/NH3  = 5/4  = 1.25  If ratio of 0.65385 O2 to NH3 means that O2 is…

Q: Q2// Calculate change in standard enthalpy of formation AH (Fe203) and Standard Enthalpy of…

A: The given reaction is:The reverse reaction is :When the reaction is reversed, the sign of enthalpy…

Q: 3. The melting point of pure urea is 132.5-133°C. Which of the following melting ranges is the most…

A: A melting point is a temperature at which the solid and the liquid phases of a substance come to…

Q: If 50.0 g of H₂ and 125.5 g of O₂ react, how many moles of H₂O can be produced in the reaction…

A:

Q: Consider the following reaction: 10 KNO3(s) + 8 C(s) + 3 S(s) → 2 K2CO3(s) + 3 K,SO:(s) + 6 CO2(g) +…

A: Given: 10 KNO3 (s) + 3 S (s) + 8C (s) → 2 K2CO3 (s) 3 K2SO4 (s) + 6 CO2 (g) + 5 N2 (g)