a students dehydration experiment with the hydrate of copper (ii) sulfate yielded a blue sample after the final heating step. how is that observation likely to affect the calculated mass of water lost and the calculated formula for the original hydrate

Q: Use the set of three reactions shown below to answer the questions that follow. 2NO(g) + O2(g) →…

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Q: What are the basic concepts of a calorimeter?

A: The basic concepts of a calorimeter should be written.

Q: What happens to the average kinetic energy of the water molecules in your body when you have a…

A: Whenever a body moves or it comes in motion from a rest position then, it acquires energy. This…

Q: if you spill some of the hydrochloric acids on the table during the reaction of hydrochloric acid…

A: The heat of neutralization: The amount of heat released by the reaction of one mole of an acid and…

Q: Explain how chemical reactions obey the law of conservation of energy. Include where energy is found…

A: Answer -  law of conservation of energy - The total energy of an isolated system remains constant…

Q: The lattice energy of CsF is -744 kJ/mol, whereas that of BaO is -3029 kJ/mol. Explain this large…

A: Given information: Lattice energy of CsF = -744 kJ/mol Lattice energy of BaO = -3029 kJ/mol

Q: A student is using calorimetry to determine the heat of solution for various salts. When the student…

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Q: Hydrogen reacts with carbon dioxide to yield water and carbon monoxide according to the equation. Is…

A: H2(g) + CO2(g) -----> CO(g) + H2O(l)  The above reaction is exothermic in nature and enthalpy…

Q: mol

A: The combustion reaction is given as: CH4 + 2O2  ---> CO2 + 2H2O   When 8.01 gram of CH4 are…

Q: Pentaborane, B5H9, was once studied as a potential rocket fuel. Calculate the heat given off  when 1…

A: 2B5H9 + 12O2 ------> 5B2O3 + 9H20  Enthalpy of reaction  = Sum of enthalpies of products-sum of…

Q: What can be measured using a calorimeter? O atomic emission from nuclear decay O pressure change in…

A: A calorimeter is an instrument used for calorimetry or the process of measuring the heat of chemical…

Q: What is a calorimeter? What is a calorimeter used for?

A: A calorimeter is an object used for calorimetry, or the process of measuring the heat of chemical…

Q: Part A Which sample is most likely to undergo the smallest change in temperature upon the absorption…

A: Here option 'c' will be correct option. i.e. 67 g of water sample is the most likely to  undergo the…

Q: Explain why a calorimeter value can different from expected caloric content in different foods.

A: A calorimeter is a device that measures the change in energy in the form of heat.

Q: Nitroglycerin decomposes under sudden impact according to the equation below: 4 C3H5N3O9 (I) --> 12…

A: Ans

Q: Can you conclude that heat is always noticeably released in a chemical reaction?

A: Can you conclude that heat is always noticeably released in a chemical reaction?  answer of the…

Q: Rubidium iodide has a lattice energy of -617 kJ/mol, while potassium bromide has a lattice energy of…

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Q: A student modeled the exothermic synthesis reaction that occurs when solid iron and liquid sulfur…

A: The given reaction is exothermic in nature, i.e., it releases heat overall.

Q: How much heat is released when 1.4 moles of hydrogen fluoride are produced? H2 (g) + F2 (g) → 2HF…

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Q: 1. For this reaction: Al 02-> A1203 a. How many moles of aluminum oxide will be formed from 17 moles…

A: 1) given, _Al + _O2 ➝  _Al2O3 a) moles of Aluminium oxide formed from 17 moles of aluminium reacting…

Q: How do you think a calorimetry is working? Discuss the principles below.

A: The demonstration or study of estimating the adjustments in the state factors of a body to ascertain…

Q: if 124 KJ of heat is absorbed in a reaction that forms nitric oxide from nitrogen and oxygen what…

A: The following information given in the question - The heat absorbed for NO produced = 124 kJ   The…

Q: When calculating the heat of reaction why did we have to add C calorimeter   specific heat ?

A: A calorimeter is a device used to determine the quantity of heat involved in the chemical or…

Q: Which value corresponds to a larger Keq: ΔGo = −8 kJ/mol or ΔGo = 20kJ/mol?

A: The relation between Keq and ΔGo is shown below.

Q: 1.2 moles of a compound reacts with a ΔHrxn=88 kJ/mole.  It proceeds 74% to completion.  How much…

A: Given: no of moles, n= 1.2 moles Enthalpy of reaction, ΔHrxn=88 kJ/mole completion % = 74 %

Q: Constants Periodic Table A calorimeter is an insulated device in which a chemical reaction is…

A: Formula used  q = mwaterCwaterdT + CxdT where q = heat  delta H = qp at constant pressure

Q: Given the thermochemical equations:  2NaN3 → 2Na + 3N2         ∆H = +42.7 kJ  How many grams of…

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Q: Using your new knowledge about gas temperature and pressure, why does a closed, empty soda bottle…

A: When a closed, empty soda bottle is left out in a cold car, the temperature of the air inside the…

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: 3. If 124 kJ of heat is absorbed in a reaction that forms nitric oxide from nitrogen and oxygen,…

A: 3. Sol :-  Given,  Amount of heat absorbed = 124 KJ  Reaction between N2 and O2 takes place to gives…

Q: Use the information provided to determine ΔH°rxn for the following reaction:   ΔH°f (kJ/mol)…

A: According to Hess´s law for the reaction:

Q: Consider the reaction. heat 2 Al(s) + Fe,03(s) Al,O3(s) + 2 Fe(l) If 11.5 kg Al reacts with an…

A: Given, 11.5 kg of Al reacts Find, How many Kg of Al2O3 will produced.

Q: The reaction: 2 Na + Cl2 --> 2 NaCl + 822 kJ, is Group of answer choices exothermic protothermic…

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Q: can you explain why energy must initially be consumed in an exothermic chemical reaction?

A: Exothermic reactions are those reactions which release energy in the surroundings due to the…

Q: A calorimeter is an insulated device in which a chemical reaction is contained. By measuring the…

A: Formula used  q = mwaterCwaterdT + CxdT  where q= heat  dT = change in temperature , C = heat…

Q: Differentiate the enthalpy of a solution with the enthalpy of combustion or a reaction. Also, give…

A: Enthalpy of the solution is the heat released or given for the formation of a solution while…

Q: H,CO, H,SO,

A: Strong acid - H2SO4 , HNO3 Weak acid - H2CO3 , HI , HF

Q: Na(s) + ½ Cl2(g)   ¾®   NaCl(s)                       H°rxn =  –411.12 kJ/mol If 1.00 kg of sodium…

A: According to Hess’s law, the enthalpy change of the reverse reaction has opposite sign to the…

Q: Calculate ASsurr for the following reaction at 25 °C: N2(g) 2 N(g) AH°† (kJ/mol) S° (J/mol ·K) N2(g)…

A: The reaction given is, => N2 (g) ⇔ 2 N (g)

Q: 2) Write the balanced equation for the thermal decomposition of copper(II) sulfate hydrate, based on…

A: Given: Thermal decomposition of copper (II) sulfate hydrate. And the average ratio of moles of water…

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

A:

Q: exothermic Is the reaction exothermic or endothermic? endothermic up Does the temperature of the…

A: Work is done by the system, sign will be negative.  Work is done on the system, sign will be…

Q: A 0.565 g of CaH18 are burned in a constant volume calorimeter, the calorimeter temperature rises…

A: Introduction: We have to calculate heat of combustion of butane in one mole.

Q: 9.) If 124 kJ of heat is absorbed in a reaction that forms nitric oxide from nitrogen and oxygen,…

A: The reaction can be written as follows,                 N2(g) + O2(g)  2NO(g)   ΔHrxn = 2ΔHof NO(g)…

Q: What will be the final temperature of the water and the bomb calorimeter in this experiment?

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Q: 4ab] a. Calculate the mass of calcium and magnesium in the original sample. b. Calculate for the…

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Q: It is advantageous to use the hydrogen gas for your fuel because it gives high calorific value.

A: Interpretation : We have to tell why hydrogen for you fuel because it has high calorific value.