What is the composition, in atom percent, of an alloy that contains 44.5 lbm of silver, 83.7 lbm of gold, and 5.3 lbm of Cu?

Q: The burning of limestone goes only 50 % to completion in a certain kiln. What is the mass…

A: Given: reaction goes to 50% completion To find: What is the mass composition of the solid withdrawn…

Q: how much energy (in kcal) is required to convert 122.2 g of benzene (c6h6) from a liquid to a gas,…

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Q: Calculate the weight of lime (CaO) obtained by heating 2000kg of 95% pure lime stone (CaCO3).

A: Given, 2000kg of 95% pure lime stone

Q: Coal-fired power plants emit CO2, which is one of the gases that is of concern with regard to global…

A: Given, $0.019 per kilowatt-hour 100,000 kWh of power per month interest rate is 12% per year…

Q: How many grams of CeHe liquid must decompose according to the following chemical equation to…

A: The given thermochemical equation is: C6H6(l)  -----> 3C2H2(g) ; ∆H = 630 kJ Given the amount of…

Q: How many grams of CO are required to react completely with 287 grams of Fe2O3? Report your answer to…

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Q: How much heat was absorbed (in J) if a 16.4 g sample of an alloy with a specific heat of 0.840 J/g…

A: Using the equation of specific heat capacity:

Q: Using the information in the table below, calculate the heat of released from the following reaction…

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Q: Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions…

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Q: d. +213.4 kJ

A: Enthalpy of formation of a compound is the change of enthalpy during the formation of products from…

Q: gma Sand Sigma Shale Sigma Hydrocarbon Shale volume, Vsh Porosity 6 cu 30 cu 20 cu 10% 25 pu…

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Q: A coffee cup calorimeter was used to measure the heat of solution, the change in enthalpy that…

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Q: Is heaven exothermic or endothermic? Is hell exothermic or endothermic?

A: Given We know about the  exothermic or endothermic

Q: Which of the following is the correct stoichiometric ratio of 1:1 AgCH3COO to Ag2S given that the…

A: Given the balanced chemical equation is, Here 2 moles of AgCH3COO and 1 mole of SrS is reacting to…

Q: Three perfect gases, all at a temperature of 25°C, are placed into a box with sides of length 1m,…

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Q: 2C,Hz) + 5 Oz6) 4 COo) + 2H,O6) m C3H8 = 22 gram n CO2 ? n H2O ? m CO2 ? m H2O ? Volume CO2 (STP) ?…

A: The reaction is the combustion of ethylene (C2H2) in the presence of oxygen to form water and carbon…

Q: Calculate the percentage mass composition of the following substance a. Ethanol ( C2H6O ) b. Gypsum…

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Q: An alloy is found to be 41.8% Zn and the rest is Cu. If 15.0g of Cu is added to 45.0g of this alloy,…

A: To calculate percentage of Cu in a Zn-Cu alloy after the addition of fresh Cu to the already…

Q: Compound X and Y are being tested for their capacity as insulators. a. In the first experiment,…

A: a.The amount of heat transferred from heated compound X to water bath is first determined first then…

Q: (a) Convert 41.3 L atm to kcal. (Use dimensional analysis)  (b) Convert –279.67°F to K. (C)The…

A: Bond enthalpy: It can be defined by saying that the amount of energy required to break the bond for…

Q: A group of students was tasked with synthesizing dibenzalacetone (DBA) in the lab. They used acetone…

A: A question  based on general chemistry that is to be accomplished.

Q: Which are characteristics of a primary standard? has an anhydrous form as a well as hydrated form…

A: The  characteristics of a primary standard have to be given,

Q: Write expressions for Kc for the following two reactions, which contribute to the destruction of…

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Q: 2. A sample of coal has the following composition by mass 63%C, 3%O, 13%S, 2% ash NCV of the fuel is…

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Q: The Joule (J) is the SI unit of energy. 1 calorie (cal) = 4.184 J; 1 kcal = 1000 cal J kJ kcal 504…

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Q: Acetylene torches are used for welding. These torches use a mixture of acetylene gas, C2H2, and…

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Q: A chemist has two alloys, one of which is 5% gold and 15% lead and the other which is 40% gold and…

A: A chemist has two alloys, one of which is 5% gold and 15% lead and the other which is 40% gold and…

Q: Comparing the two quantities based on the given condition, which is greater I or II? or are they…

A: We will determine the Molecular weight of each of the following

Q: Calculate the standard enthalpy for the reaction: 4NH3(g) + 502(g) - 4NO(g) + 6H2O(g), given the…

A: Enthalpy change of a reaction is an extensive property, it depends on stoichiometry of the chemical…

Q: 10. A student analyzed a limestone sample but forgot to dry it. He found 31.20% CaO, whereas the…

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Q: Acidity in water can be neutralized with Ca(OH)2 as shown in the equation below. How many lbs/day of…

A: The balanced chemical equation is: 2HCI + Ca(OH)2 → CaCI2 + 2H2O Given, Mass of HCl = 290 lbs/day.

Q: A student investigated the stoichiometry of the nickel (II) nitrate - sodium sulfide - water system…

A: Step 1) Given compound: Sodium sulphide = Na2S  Nickel nitrate = Ni(NO3)2 Reactants : Sodium…

Q: The Ecell of a reaction was found to be +0.78 V. What is the ∆G° of the reaction? ne=1 mol

A: Redox reaction are those in which both oxidation and reduction reaction occurs simultaneously.

Q: Calculate the number of pounds of CO2 released into the atmosphere when a 10.0 gallon tank of…

A: Combustion of octane is given by: 2C_8H_{18}+25O_2\to 16CO_2+18H_2O2C8​H18​+25O2​→16CO2​+18H2​O…

Q: Anhydrous copper (II) sulfate is a gray-white powder. When a student heated 250 gram of bright blue…

A: Some ionic compound (salt) contains a water molecule in their crystal lattice structure. The water…

Q: Q2/A) A liquefied mixture 200 kg has the following composition by mass :- (C,H10 20% , CsH12 30% ,…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: How many liters of oxygen gas at STP are required to react with34.7 g of aluminum in the production…

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Q: How many kJ are in 6835 cal?

A: The term conversion factor can be termed as the formula or the number which is required for the…

Q: Which of the following contains highest percentage of volatile matter? anthracite peat bituminous…

A: Coal is generally of 4 types  bituminous,peat lignite and anthracite.

Q: In the production of printed circuit boards for the electronics industry, a 0.320 mm layer of copper…

A: First the volume of Cu is calculated which then used to determine the mass of Cu.

Q: A fuel is analyzed and found to contain 80% C, 14% H, 5% S and the balance being N. What is the HCV…

A: A numerical problem based on energy that is to be accomplished.

Q: The manufacture of nitrogen trifluoride is a growing industry, due to its use as a plasma etchant in…

A: Given: Mass of ammonium fluoride = 1.20 x 103 g Mass of hydrogen fluoride    = 1.20 x 103 g Mass of…

Q: A geochemist in the field takes a small sample of the crystals of mineral compound X from a rock…

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Q: Consider a blend of mass 5g formed from 2.2 g of C12H24 and 2.8g of C998H1000 paraffin's:, What are…

A: Number average molar mass  Mathematical expression  Mn =∑Mii∑ini Weight Average molar mass…

Q: What is the balanced equation with phases for the decomposition of lithium bicarbonate into lithium…

A: The balanced equation for the decomposition of lithium bicarbonate, LiHCO3, is shown below. 2LiHCO3s…

Q: information

A: Dear student I have given answer to your question in the image format.

Q: Explain how hardness of water affects boilers and pipelines.

A: Hardness of water affects boiler very much.  Boiler will be broken or be failed by using hard water.…

Q: 4. Is the following equation exothermic? Discuss with numbers. O +2e 4aGraphite is a conductor while…

A: 4. This reaction occurs in two steps- O(g)+e−→O−(g),                     ΔH1=−141 kJmol-1…