Oxygen gas, O,, reacts with potassium, K, to form K,O according to the following reaction. 4 K(s) + O,(g) → 2 K,0(s) A sample of O, gas is shown in the image

Q: An unknown pentahydrate salt is known to release water when heated according to the following…

A: Given: Mass crucible = 24.3365 g Mass crucible + hydrate = 29.6115 g Mass crucible + residue after…

Q: 5. The energy in our bodies mainly comes from carbohydrates, which are broken down into simple…

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Q: Consider the reaction: Fe(s)+Cl2(g)→FeCl3(s) How many moles of iron(III) chloride are produced?

A: In the given question we have to calculate the moles of FeCl3 produced,  first of all, we have to…

Q: What is the difference between a reactant and a product?

A: The substance that is present left side of the arrow in a chemical reaction are called reactant and…

Q: Consider the following particulate representations. The beaker on the left represents the reaction…

A: Thermodynamics is the branch of chemistry that deals with the changes in the heat, temperature,…

Q: One way the U.S. Environmental Protection Agency (EPA) tests for chloride contaminants in water is…

A: Given: Mass of silver chloride i.e. AgCl collected = 2.0 mg = 0.002 g                       (Since 1…

Q: HI (aq) + NaOH(aq) Ca (s) + Br₂ (1) eaction. 1 1 CH,(CH,),CH,(g) + 80,(g) – 5CO,(g) + 6H,O(g)…

A: -> When two or more than two species combine to form single species that is Combination equation.…

Q: 1.003 g of soduim chloride was recovered in the reaction of Hydrochloric acid + Sodium carbonate →…

A: The reaction of hydrochloric acid with sodium carbonate forms sodium chloride, carbon dioxide and…

Q: A 5.276 g sample of Al-Mg alloy is digested in nitric acid (to Al*3 and Mg*²). The solution is…

A: Given: Mass of sample = 5.276 g The solution is diluted = 500 mL three 100 mL of solution titrated…

Q: CUSO4 + 2NaOH → Cu(OH)2 + Na,SO4 In the reaction above, CuSO4 is a and Na, SO4 is a 1. The number…

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Q: Label each figure below as a physical or chemical change and explain how you know in complete…

A: Physical changes are the changes observed when the physical properties of the molecule changes, such…

Q: Balance the following chemical reaction using the combination of a smallest possible set of whole…

A: Given , ? Mg(s) +? HCl(aq) →? MgCl2(aq) +?H2(g)

Q: The reduction of iron(III) oxide to iron during steel-making can be summarized by this sequence of…

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Q: Given the following three sequential reactions: 1) N₂(g) + 3H2(g) → 2NH3(g) 2) 4NH3(g) + 5O2(g) →…

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Q: reaction 2K CIO3(s)→ 2K Cl(s) + 30₂ (g) HI(aq) + NaOH(aq) Nal(aq) + H₂O (1) 4 2CH₂CH₂(g) + 70₂(g) →…

A: Given that, Some examples of reaction and we have to identify the type of reaction.

Q: Consider the following chemical reaction: Na2Cr2O7(aq) + BaCl2(aq) ---------------> NaCl(aq) +…

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Q: Consider the reaction between hydrogen gas and bromine gas to form gaseous hydrogen bromide (HBr).…

A: Given; The reaction is as follows: H2(g) + Br2 ------------> 2HBr. moles of H2 reacting = 7…

Q: What is the law of mass action? O The ratio of the product concentrations to the reactant…

A: Law of Mass Action : According the law of mass action, the rate of a chemical reaction is directly…

Q: A sample of 8.8 g of methanol, CH3OH(l), is added to a 1.00 L flask, whereby the flask is sealed and…

A: since you have posted a question with multiple subparts we are entiled to answer only first 3…

Q: 5. What is meant by the phrase “reaction to completion”?

A: The phrase “reaction to completion” defines

Q: Consider the following reaction: 2CH3OH(g) + 302 (g) →2CO2(g) + 4H,O(g) Each of the following…

A: Balanced chemical reaction is given by, 2CH3OH(g)+3O2(g)→2CO2(g)+4H2O(g)

Q: the References to access important values if needed for this question. For the following reaction,…

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Q: Please don't provide handwritten solution ....

A: Complete ICE table is given as below,                        [CO]               [H₂O]    [CO₂]…

Q: Classify each chemical reaction: Reaction Cl₂(g) + CuBr₂ (aq) → CuCl₂ (aq) + Br₂ (1) FeCl₂ (aq) +…

A: A chemical reaction is defined as a process where one or more than one reactant react with each…

Q: Write a balanced chemical equation based on the following description: nitrogen gas reacts with…

A: The objective of the question is to write a balanced chemical equation for the reaction of nitrogen…

Q: A solid mixture consists of 32.3 g of KNO3 (potassium nitrate) and 5.7 g of K2SO4 (potassium…

A: Mass of KNO3 = 32.3g  Mass of K2SO4 = 5.7g Mass of water = 130.0g Temperature = 0°C Solubility of…

Q: The drawing below shows a mixture of molecules: key carbon hydrogen nitrogen sulfur охудen chlorine…

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Q: In one reaction, 41.2 g of Cu(NO3)2 is produced. What amount (in mol) of CuCl2 was consumed? What…

A: AgNO3 + CuCl2 → AgCl + Cu(NO3)2Balancing the above equation, we get2AgNO3 + CuCl2 → 2AgCl +…

Q: For the following reaction, 23.1 grams of sodium chloride are allowed to react with 57.1 grams of…

A: Moles of NaCl = given massmolar mass=23.158.5= 0.395 mol  Moles of AgNO3 = given massmolar…

Q: 3. Gold is very valuable because it does not oxidize easily. It can be oxidized by reacting it with…

A: The balanced reaction is - Au(s) + 4H+ + 4 NO3-   NO(g) +2 H2O(g) + Au+3+ 3NO3- molar mass of Au =…

Q: NaCl(aq) + AgNO3(aq) → NaNO3(aq) + AgCl(s) Ca(s) + Cl₂(g) → CaCl₂ (s) H Br(aq) + NaOH(aq) → NaBr(aq)…

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Q: Consider the following chemical reaction HCl (aq)  + HgNO3 (aq) à Hg2Cl2 (s) + HNO3 (aq) If 20.0…

A: Given: Mass of HCl=20.0 g Mass of HgNO3=30.0 g Percentage yield=78.4% To find: Reagent in excess…

Q: [References] nelling salts," which are used to revive someone who has fainted, typically contain…

A: The question is based on the concept of Reaction Stoichiometry.   We have  to calculate the mass of…

Q: e following reaction, 6.42 grams of en gas are mixed with excess sulfur

A: Use stoichiometry of the reactio to get theoritical yield Percent yield is the ratio of actual yield…

Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.