What was the mass of the aluminum?

Q: 9. Calculate AH for the following reaction: 2B (s)+ 3,0,(g) → B,0, (s) Use the following reactions…

A: Answer:

Q: tWo steps in thể usual industrial preparation of acrylic acid, the immediate precursor of several…

A: The question is based on Hess law. it  states that net enthalpy change for the reaction remains same…

Q: 8. Calcium cyanamide reacts with water in the reaction CACN2(s) + 3H2O(0) → CaO(s) + 2NH3(g) When…

A: Find the number of moles of reactants and products involved in the reaction. Step 2:

Q: A 455-g sample of nickel at 124oC is placed in 75.0 mL of water at 20.0oC. What is the final…

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Q: A piece of Al(s) at 97°C is placed in 58g of H2O at 24°C. The Aluminum cools and after equilibrium…

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Q: When 13.8 ml of 0.870 M lead(II) nitrate reacts with 90.0 ml of 0.777 M sodium chloride, 0.579 kJ of…

A: Using mole-mole analysis and thermochemistry concepts we can solve this question.

Q: Calculate AH°n for the first reaction shown from the remaining reactions. CS2(e) + 302(g) → CO2(g) +…

A: By rearranging the given equations and adjusting them to get the required equation will lead to…

Q: Without doing any calculations, determine the sign of ASgys for each of the following chemical…

A: ΔS of any reaction is the change in entropy in the reaction. Since the entropy is measure of…

Q: There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of…

A: Calcium carbide is widely used in the industrial preparation of acrylic acid.

Q: Under the standard state and 260 °C, the solid of ammonia hydroxide NH4OH (s) decomposes explosively…

A: NH4OH (s)  ==> NH3 (g) + H2O (g)

Q: For the reaction N2(g) + 3 H2(g) = 2 NH3(g), what is AG (in kJ) at 298 K when the pressures of the…

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Q: 7. Calcium chloride, is added to a canned vegetables to maintain the vegetable's firmness. When…

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Q: A 200 ml sample of 0.600 M aqueous hydrochloric acid is added to 300 mL of 0.400 M aqueous ammonia…

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Q: The overall reaction in a commercial heat pack can be represented as 4 Fe(s) + 302(g) → 2 Fe,O,(s)…

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

Q: A stainless steel lawn mower blade with a mass of 0.950 kg is being forged. During the process, the…

A: Heat released by steel is equal to heat gain by water.

Q: a In the reaction of two moles of gaseous sulfur dioxide and one mole of gaseous oxygen to form two…

A: We can solve Given problem by using formula ∆H = ∆U + W Where  ∆H = enthalpy change  ∆U = Internal…

Q: Butane Combustion Reaction Equation  C4 H10 (g) + 13/ 2 02 --->    4 CO2 (g) + 5 H2O(g) 1. For…

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Q: A solid 30.2 cm^3 block of KClO3 is heated in the laboratory and decomposes according to the…

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Q: A sample of aluminum with a mass of 53.4 g is initially at 156 ∘∘ What is the temperature of the…

A: Specific heat (C) :-  The amount of heat required to raise the temperature of 1 gram of a substance…

Q: MISSED THIS? Watch WE 93 Read Section 9.4. You can click on the Review link to access the sectionin…

A: Given: Initial temperature of Ag = 59.4 oC Mass of water = 100.0 g Initial temperature of water =…

Q: 1. 1. Zinc metal reacts with HCl according to the following equation: Znw + HClag) → ZnClz{aq) +…

A: The formula for density is, Rearranging it to calculate the mass from volume and the density of…

Q: The dissolution of ammonium nitrate occurs spontaneously in water. As NH4NO3 dissolves, the…

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Q: Consider the reaction 2 H, + O, → 2 H,0 AHxn = -484 kJ Which answer best describes the transfer of…

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Q: A 45.0 g sample of an alloy was heated to 90 oC and then dropped into a beaker containing 82.0 g of…

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Q: Consider the combustion of liquid methanol, ??3?? (?) CH3OH (l) + 3/2 O2 (g) → CO2 (g) + 2 H2O (l)…

A: Given reaction is :  CH3OH (l) + 3/2 O2 (g) → CO2 (g) + 2 H2O (l) Enthalpy change of the reaction in…

Q: Silver carbonate, Ag, CO3, is a light yellow compound that decomposes when heated to give silver…

A: To calculate partial pressure of carbon dioxide:

Q: Calculate ΔGº, ΔHº, and ΔSº at 25ºC for the reaction below in the indicated units. [Use…

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Q: A 52.5-g metal weight, heated to 86.00°C, is placed into 119 g of water at 21.65°C contained in a…

A: Given,  Weight of the metal = 52.5 g  Weight of the water = 119 g  Inside Temperature = 23.55 °C…

Q: The overall reaction in a commercial heat pack can be represented as 4 Fe(s) + 302 (9) + 2 Fe, 0,(s)…

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Q: N2(g)+3H2(g)→2NH3(g) AH°rxn=-92.6 kJ/mol f 2.0 moles of N2 react with 6.0 moles of H2 to form NH3,…

A: Work is calculated by  W= nRT And for ∆U we will use first law of thermodynamics.

Q: Consider the following generic chemical equation whose ΔHrxn is unknown. Target: 2A+7B⟶4X Instead,…

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Q: Nitromethane, CH3N02, can be used as a fuel. When the liquid is burned, the (unbalanced) reaction is…

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Q: A 53.0-g metal weight, heated to 88.50°C, is placed into 167 g of water at 19.80°C contained in a…

A: Given that : Mass of metal (mm) = 53.0 g The temperature of metal (Tm)= 88.50°C Mass of water (mw) =…

Q: Given: 2C(s) + O₂(g) → 2CO(g) ∆H = -218 kJ C(s) + O₂(g) → CO₂(g) ∆H = -393 kJ How much energy is…

A: The given reactions are: 2C(s) + O₂(g) → 2CO(g)           ∆H = -218 kJ  C(s) + O₂(g) → CO₂(g)…

Q: 9. Given 2Als) + 3/2 O2(g) → Al2O3(s) AH = -1670 kJ What is AH for the reaction? 2Al2O3(s) → 4Al(s)…

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Q: Calculate AH for the reaction, C,H,(g) + H,(g) → C,H,(g) Given: (a) 2 C,H,(g) + 5 0,(g) →4 CO,(g) +2…

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Q: When 1.14 g of octane (molar mass = 114 g/mol) reacts with excess oxygen in a constant volume…

A: Given:  Change in temperature =10oC Total heat capacity = 6.97 kJ/mol qcal = - qrxn

Q: The value of AH for the reaction below is -126 kJ. The amount of heat that is released by the…

A: The reaction given is  The value of ΔH of the reaction = -126 KJ. And mass of Na2O2 reacting = 25.0…

Q: For the equation: Na + H20 → NaOH + ½ H2 If 5 grams of sodium is placed into 100 grams of water at…

A: Sodium metal reacts with water to form sodium hydroxide and hydrogen gas. The equation for the…

Q: CaCOg(s) -> CaO(s) +CO2 AH=177.8 kJ/mol What is the change in the internal energy for the reaction…

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Q: 65. Calculate ΔH for the process Hg2Cl2(s)⟶2Hg(l)+Cl2(g) from the following…

A: ΔH for the process Hg2Cl2(s)⟶2Hg(l)+Cl2(g)                           (main equation)   And we have,…

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…

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Q: Calculate the ΔHo for methane gas , CH4, produced from graphite and hydrogen gas according to the…

A: The enthalpy change is defined as the amount of heat absorbed or evolved in the transformation of…

Q: The value of AH° for the reaction below is -126 kJ. The amount of heat that is released by the…

A: Given reaction is : 2Na2O2 (s) + 2H2O(l) ---> 4NaOH(s) + O2(g)

Q: Given the following reactions, determine the AH for the combustion of methane (g) to produce Carbon…

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Q: Below is the reaction for the evaporation of water: H20 (1) → H20 (g) AH°f H2O (1)= -285.8 kJ/mole;…

A: Reaction for evaporation of waterH2O (l) → H2O (g)∆Hf°[H2O (l)] = - 285.8 kJ/mole∆Hf°[H2O (g)] = -…

Q: After transfer of 1.40 kJ of thermal energy to a 0.752-kg block of copper the temperature is 43.4…

A: Consider the given information is as follows; q = +1.40 kJ = 1400 J Mass (m) = 0.752 g = 752 g…

Q: The reaction 2N;O)- 2N2(9) + Oz(g) has AH° - -163.14 kJ. What is the value of AE for the…

A: The relationship between ∆H and ∆ E is given by expression  ∆H = ∆E + ∆ngRT Where ∆ng = moles of gas…