1- Alum used in cooking is potassium aluminum sulfate hydrate, KAl(SO4)2. XH2O. To find the value of X, you can heat the sample of compound. Assume you heat 4.74 g of the hydrated compound and that sample loses 2.16 g of water. What is the value of X?

Q: Expressing amounts of energy in different energy units is necessary to solve many chemistry…

A: Calorie and Joule are the units of energy

Q: 4. The explosive nitroglycerin decomposes rapidly according to the reaction 4 C3H5N3O9 (1) → 12…

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Q: In the calibration of a calorimeter, an electrical resistance heater supplies 100.0 J of heat and a…

A: Calorimetry refers to measurement of heat change associated with a physical or chemical change. The…

Q: 2. The following table shows the probability distribution of the number of watches that a jeweller…

A:

Q: Enter your answer in the provided box. You are given the following data: H;(g) – 2H(g) AH° = 436.4…

A: Given, a) H2(g) ➝ 2H(g)  ∆H° = 436.4 kJ/mol b) Br2(g) ➝ 2Br(g)  ∆H° = 192.5 kJ/mol c) H2(g) + Br2(g)…

Q: Given the specific heat of lead is 0.129 J/g.C and that it takes 93.4J of energy to heat a sample of…

A: Specific heat It is amount  of heat required to change the temperature of a substance by 1 Degree of…

Q: Consider the generic chemical reaction between A and B to form C. A has a molar mass of 215.8 g/mol,…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: 1) O, 2)Me,S 1)KMNO,/heat 2) H,O*(aq) NBS RO-OR 1) BHSTHF 2) NAOH/ROOR H,O°(aq)

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Q: The same student wanted to determine the heat of dissolution for potassium chlorate (KClO3, MW:…

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Q: Calculate the energy (in kJ) required to heat 0.706 grams of water from 43.5 ℃ to 119.2 ℃.

A: Specific heat (Cs)  :-  The amount of heat required to raise the temperature of one gram of a…

Q: The reaction of nitrogen monoxide(g) with hydrogen(g) to form nitrogen(g) and water(1) proceeds as…

A: Since in the reaction 2 moles of NO is reacting  Hence the value of ΔHrxn will be = energy evolved…

Q: EA 0.3423 g sample of pentane, C5H12, was burned in a bomb calorimeter. The temperature of the…

A: The amount of heat required to increases the temperature of the 1 g of the substance by 1 degree is…

Q: 5.127 Photosynthesis produces glucose (C6H12O6) and oxygen from carbon dioxide and water:

A: a) Enthalpy of the reaction is calculated as, ∆H0=∑∆Hproducts-∑∆Hreactants∆H0=1(-1274.5 KJ/mol)+6(0…

Q: 2. If a metal has a mass of 27 q and it requires 420 J of heat energy to increase temperature from…

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Q: For a chemical reaction, wNa₂S + xHCl → yNaCl + zH₂S, what would be the values of w, x, y, and z so…

A: The reaction given is, => Na2S + HCl → NaCl + H2S

Q: Nitrogen gas mixes with hydrogen gas to produce ammonia gas (NH3). How much energy is required or…

A: Energy produced by this reaction is equal to -91.8 KJ/mol N2 + 3H2 -------> 2NH3        DEL Ho=…

Q: Reaction; 286 kJ + 2H2O→ 2H2 + O2 A) How many moles of hydrogen will be produced if 46,000 kJ of…

A:

Q: 1. LDA, THF -78 °C 2. Br b. 1. LDA, THF -78 "C 2. 1. LDA, THE-78 C. Br. 2. C. 1. NaOMe, MeOH Br. 2…

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Q: How much heat in kcal must be added to 0.47 kg of water at room temperature (20°C) to raise its…

A: Specific heat :- The amount of heat required to rise the temperature of 1 gram or 1 kg of a…

Q: (ii) The industrial process for producing sulphuric acid, H2SO4, from elemental sulphur has three…

A: Sulfuric acid is prepared in three steps starting from elemental sulfur. The process is called the…

Q: When 0.985g sample of C 7H 5N 30 6 is burned in a bomb calorimeter, the temperature increases from…

A: Given that : Mass of sample(Ms)=0.985 gMass of waterMw=661 gChange in…

Q: A General Chemistry student performed the “Thermochemistry” lab and obtained the following results:…

A: When reactants are converted to products, some heat change takes place, this is called the heat of…

Q: "When 0.774g sample of C7H 5N 30 6 is burned in a bomb calorimeter, the temperature increases from…

A: Given ,that the sample=0.774g of C7H5N3O6 is burned in a bomb calorimeter Temperature increases from…

Q: Calculate the energy in joules of a 6.08 g object moving at a speed of 307 m/s.  Ek =   J

A: Energy of the moving object can be determined using the given equation,

Q: If the specific heat of gold is 0.13 J/(g°C), how much heat is needed to raise the temperature of a…

A: Here we are asked to calculate the amount of heat needed to raise thetemperature of a   20 gram…

Q: Laboratory quantities of ethylene gas, CaHa(g), can be prepared by an elimination reaction of…

A: In order a reaction to proceed conversion from reactant to product, it involves some amount of heat…

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

A: Answer given as follows

Q: In one experiment you reacted 45.7 g of Alumin um with 182.8 g of Iron (III) oxide to produce…

A: Reaction involved is:

Q: 2H,S (0) + 30, 2 H,0 0 + 2 S02 (9) 2(g) AH = -1123.94 kJ/mol If 362.94 kJ of heat released,…

A:

Q: Liquid sodium is being considered as an engine coolant. How many grams of liquid sodium (minimum)…

A: Given,  Amount of heat absorb = q = 1.20 MJ  Change in temperature = 10 0C  Molar heat capacity = Cp…

Q: Using the balanced chemical equation below, what amount of heat energy is produced (in kJ) if 65.15…

A: Combustion reaction: When a hydrocarbon reacts with oxygen present from air gives carbon dioxide and…

Q: A)When 1 mole of CO(g) reacts with Cl2(g) to form COCl2(g) according to the following equation, 108…

A:

Q: Using the following data, calculate the standard heat of formation of ICl(g) in kJ/mol:

A: Interpretation: To determine the standard heat of formation of ICl (g)

Q: theoretical yield of ammonia

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Q: Arsenic trichloride can be prepared through the reaction of arsenious oxide with concentrated…

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Q: For the equation: NANO3 (s) – NaNO3 (aq) If 20 grams of NaNO3 were placed into 200 grams of water at…

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Q: What is the energy that is produced from the frequency of 9.47 x 10° Hz? 0.317 J 1.43 x 1042 J 6.28…

A: Given, the frequency of radiation ν =9.47×108 Hzwe are asked to calculate the energy corresponding…

Q: what is the unit, including its prefix, for 10^-6 of the derived unit for energy?

A: The ability to do work is called energy.

Q: What is the mass of SO3 when -8753 kJ of energy are used according to the following equation?2S +…

A: A reaction is said to be endothermic where energy is consumed which is represented by a positive…

Q: For the following reaction, what is the energy released, in GJ/mol? (1 GJ = 1E9 J) Use 2.998E8 m/s…

A:

Q: Things haven't exactly been going Wile E. Coyote's way. For his latest scheme, he is going to set a…

A: In this question, we want to determine the moles of CH4 gas when 270kJ energy is released after…

Q: Find the AH of the following reaction: N2(g) + O>(g) + Cl½(8) 2NOCI(g) given the following…

A: (i) 2 NOCl (g)  ----> N2 (g)  +  O2 (g)  + Cl2 (g)   ; ∆H1  (ii) 1/2 N2 (g)  + 1/2 O2 (g)…

Q: TU au point What is the energy change when the temperature of 13.1 grams of solid nickel is…

A: -> Energy is related to the mass, change in temperature AND the specific heat of the material.…

Q: What is the sum of coefficients from the following reaction (both products and reactants)? X.3H2O +…

A: Dehydration :-  The process of removal of water from a substance is known as dehydration When a…

Q: NH3(g) +O2lg) -> + (3)ON H2O(g) Based on the enthalpies of formation, how much energy, in kJ, will…

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Q: 2. What property of enthalpy, AH, allows us to use Hess' law to solve problems?

A:

Q: How many grams of C5H12 must be burned to heat 1.40 kg of water from 23.4 °C to 91.7 °C?

A: The amount of heat absorbed (or released) by a fixed amount of a substance to change its temperature…

Q: The reaction of hydrogen chloride(g) with oxygen(g) to form water(g) and chlorine(g) proceeds as…

A: Given reaction: 4 HCl (g) + O2 (g) → 2 H2O (g) + 2 Cl2 (g) It is also given that 10.7 kJ of energy…

Q: Enter your answer in the provided box. A piece of silver with a mass 336 g has a heat capacity of…

A: Specific heat capacity of silver =  = Heat capacity/ Mass of silver = 79.6J/°C/ 336 = 0.237J/°Cg

Q: Enter your answer in the provided box. High-purity benzoic acid (C,HgCO0H; AH, for combustion =-3227…

A: mass of benzoicacid = 1.221 g      Heat capacity of calorimeter =1365 J / C ΔH rxn = -3227 kJ/mol of…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".