If you place 7.05 g of aluminum in a beaker with 185 mL of 1.35 M KOH, what mass of KAl(OH)4 is produced?

Q: 4. How many grams of magnesium oxide can be produced by reacting 0.643 g magnesium that is 94.5%…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: 3. Given the following reactants, predict the expected products and balance the chemical equation.…

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Q: If 6.750 grams of lithium carbonate was used in the reaction, how many grams of carbon dioxide would…

A: The equation for the decomposition of lithium carbonate is as follows. Li2CO3 → Li2O + CO2 This is a…

Q: If 64.0 mL of 0.150 M HCl(aq) is needed to neutralize all the NH3(g) from a 2.25 g sample of organic…

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Q: If 1.5 moles of oxygen gas combines with solid aluminium to form Al203, what is the mass of…

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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: Over the years, the thermite reaction has been used for welding railroad rails, in incendiary bombs,…

A: The molar mass of Fe is 55.85 g/mol. The molar mass of Al is 26.98 g/mol. The molar mass of Fe2O3 is…

Q: How many moles of lithium hydroxide would be required to produce 41.5 g of Li,CO, in the following…

A: The balanced chemical reaction taking place is given as, => 2 LiOH (s) + CO2 (g) ---------->…

Q: 9. Phosphorus reacts with oxygen gas to produce tetraphosphorus decoxide. 4 Po + 5 02(g) P,O 10(9)…

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Q: 4. How many grams of chlorine will react completely with 9.650 grams of magnesium to produce 1.00…

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Q: Billions of pounds of urea are produced annually for use as fertilizer. Balance the skeletal…

A: Another name of urea is carbamide. It is an organic compound having chemical formula CO(NH2)2 is…

Q: Is the decomposition of CuSO4· 5 H2O a physical or a chemical change? Why?

A: The copper sulfate penthydrate dehydrates to form the clear, anhydrous copper sulfate.

Q: 5. Potassium superoxide is used to generate oxygen in confined places, such as submarines and…

A: We have to calculate the mass of oxygen produced.

Q: What is the complete balanced reaction for the complete combustion of C8H18 in oxygen? From the…

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Q: Iodine is made by the following reaction 2 NaIO3(aq) + 5 NaHSO3(aq) → 3 NaHSO4 (aq) + 2 Na2SO4 (aq)…

A: Given , Reaction : 2NaIO3(aq) +5 NaHSO3(aq) → 3NaHSO4(aq) + 2Na2SO4(aq) +H2O(I) +I2(aq)

Q: Write a balanced chemical equation based on the following description: solid cesium reacts with…

A: 6Cs (s) + 2 CsNO (s) -------> 4Cs2O (aq) + N2(g)

Q: 2Cl2) is formed from sulfur I atoms in the reactants an

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Q: How many grams of O2 are required to produce 73.78 grams of ZnO? 2 Zn + 102→ 2 ZnO

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Q: How many grams of nickel(II) nitrate are needed to produce 35.7 g nickel(II) phosphate in the…

A: Given data, mass of nickel(II) phosphate = 35.7 g, molar mass of nickel(II) phosphate=366.02 g mol-1…

Q: razine, a fuel used to power rocket engines, is a product of the reaction between ammonia and…

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Q: Caustic soda, NaOH, can be prepared commercially by the reaction of Na 2CO 3 with slaked lime,…

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Q: how many grams of calcium hydroxide, Ca(OH)2, are needed to react completely with 65.9 g of…

A: Given: Mass of HCl = 65.9 g Molar mass of HCl = 36.46 g/mol Molar mass of Ca(OH)2 = 74.092 g/mol

Q: what mass in grams of H2O can be produced from 9.00 moles of O2?

A: In the given question we have to calculate the mass in gram of H2O. the balanced equation will be  2…

Q: N2+ 3H 2 → 2NH 3 How many grams of nitrogen are needed to produce 300 grams of ammonia? O a. 247 O…

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Q: If you have 6 moles of Al(OH)3, how many moles of Cu(OH)3 will be produced?

A: Note : Formula for copperhydroxide is written wrong. Cu(OH)3 is wrong formula. Correct formula is…

Q: how many grams of O2 are needed to produce 1.26 x 1028 molecules of H2O

A: Number of moles can be calculated by dividing number of moles with Avogadro number. No. of molecules…

Q: How many grams of NO are required to produce 145 g of N 2 in the following reaction? 4NH 3( g)+ 6NO(…

A: Given, the chemical reaction as follows,4NH3(g)+6NO(g)→5N2(g)+6H2O(l)amount of N2 (g) produced =145…

Q: Lithium faces an increasing demand since the alkali metal is a key component in a lithium- ion…

A: Given  Number of moles of lithium = 5.40 mol we have to calculate the weight of lithium. Molar mass…

Q: Assuming you start with 1.25 g of pure aluminum, calculate the following: 1) The amount of potassium…

A: Mass of Al = 1.25 g

Q: Explain the attachment

A: Given, Mass of Mg(OH)2 = 5.97g

Q: CaO + H2O → Ca(OH)2 If 9.5 × 1024 particles of Ca(OH)2 are produced, how many moles of CaO were…

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Q: In the preparation of Boric acid (MW = 61.81 g/mol), 120 grams of borax (MW = 381.2 g/mol) dissolved…

A: Given that : Mass of borax used = 120 g Volume of water used = 300 mL Volume of HCl used = 60 mL The…

Q: If 5.1 kg of CO2 are produced during a combustion reaction, how many molecules of CO2 would be…

A: The number of moles of a substance is given as the mass of the substance upon its molar mass. The…

Q: How many grams of potassium metal are needed to produce 15.26 g of solid potassium hydride…

A: The given data : The weight of the solid potassium hydride (KH) = 15.26 g The molar mass of K =…

Q: 5. How from 45.1 grams of cadmium with excess sulfur? many moles of cadmium chloride can be produced…

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Q: What mass of oxygen gas is produced in the electrolysis of water, for every gram of hydrogen gas…

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Q: What weight in kg of H2O will be produced if 12.3 moles of C3H8 are used?

A: Combustion reactions are reactions in which a substance reacts with an excess of air or oxygen to…

Q: If the original sample of Zn had a mass of 1.4 g, what mass of ZnCl, can be produced in the…

A: Mass of Zn = 1.4 gms Molecular mass of Zn = 65.38 gm/mol Molecular mass of ZnCl2 = 136.2865.38…

Q: If 10.7 kg Al reacts with an excess of Fe,O3, how many kilograms of Al,0, will be produced?

A: Given :-  2Al(s) + Fe2O3(s)  -----> Al2O3(s)  + 2Fe(l)  Mass of Al = 10.7 kg  To be calculated :-…

Q: 2) If 28.9g of Lithium Nitride react, how many grams of Magnesium Carbonate are needed to react with…

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Q: what mass of CO2 is produced by the reaction?

A: Molar mass of carbon is 12.01 g/ mol. Molar mass of CO2= Atomic weight of C + 2× Atomic weight of O…

Q: If 2.952 g of copper(II) nitrate is reacted with sufficient sodium hydroxide, how much copper (II)…

A: The balanced reaction of copper (II) nitrate with sodium hydroxide can be given as

Q: A sample of gas mixture from a neon sign contains 3.32 x 10-2 mol Ne and 4.65 x 10-2 mol Kr. What…

A: Mol of Ne = 3.32 x 10 -2 mol Mol of Kr = 4.65 x102 mol

Q: What

A: Given, The molecules of N2O = 1.37 x 1017 The mass of nitrogen atom has to be calculated.

Q: What is the mass percentage of O in C₃H₈O₂? Provide an answer to two decimal places.

A: We have to find the mass % of O in C₃H₈O₂ As,  Atomic mass of C = 12 g mol-1 Atomic mass of H = 1 g…

Q: If the same amount of electricity that is used to produce 500 g copper metal (Cu Cu") is used to…

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Q: When diborate (B2H6) reacts with oxygen to form boric acid (HBO2) and water, what mass of diborate…

A: This question is related to stoichiometry which determines the quantitative relationship between…

Q: If two moles of carbon are available for the reaction described by the following equation. How much…

A: Given balanced chemical equation is SiO2(s) + 3C(s) ------> SiC(s) + 2CO(g) Given that , Moles of…

Q: what is the mass percentage of Ag in a piece of metal with 50.4 g of Ag in a 125 g sample?

A: Given, mass of Ag = 50.4 g  mass of sample = 125 g mass percentage of Ag = ? %

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.