4. Describe the relationship between the metal and water in terms of which is exothermic and which is endothermic.

Q: 4. Determine the difference in electronegativity ( JAe.n.|) for each of the following bonds, then…

A:

Q: In gravimetric analysis why the reaction is not stopped at CaC204 H20 formation, but it is carried…

A: Gravimetric analysis is used for determining the effect of change in temperature/heat on the…

Q: OH Br -> H.

A:

Q: A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3…

A: Given: The mass of iron (Fe) ore A is 1.500 g The mass of pure Fe2O3 in ore A is 0.5215 g The mass…

Q: Provide what is being asked in each of the columns in the given table. Molecule/ Molecular Molecular…

A: We have to provide lewis structure, molecular geometry and shape of the given ion, 1.SH4++ 2.SCN-

Q: What group renders the acidic resistance of this drug? methoxy benzyl phenoxymethyl carboxymethyl

A:

Q: 1. For a certain gas cp 0.998 KJ/kg.K, R = 0.277 KJ/kg.K a. Find Cv and K b. If the mass of the gas…

A:

Q: A multivitamin sample has a label claim of 500 mg ascorbic acid (176.12 g/mol). According to quality…

A: Ascorbic acid (Vitamin C) is a monoprotic acid with formula HC6H7O6.  Hence the balanced equation…

Q: What is true about the IR spectrum of 2,3-dimethyl-2-butene?

A: The details about IR spectrum of  2,3-dimethyl-2-butene is given below

Q: An aqueous solution of NaCl contains 2.4 g NaCl in 80.0 mL solution. Calculate the molarity of the…

A: Given,  Mass of NaCl = 2.4 g  Volume of solution in mL = 80.0 mL  Calculate the molarity of NaCl = ?…

Q: Calculate AH for the reaction CIF(9) + F20)CIF3(9) given the following chemical equations and their…

A:

Q: A high altitude balloon has a volume of 2.43 L at 755 torr and 20.1 C. What is the volume at 1.00…

A:

Q: 32. A 50.00 mL of 0.0275 M HCl solution was titrated with 0.1500 M NaOH. Calculate the pH of the…

A:

Q: Given the following data for this reaction below what is the rate law for this reaction.(To make…

A: With the help of given experimental table, Rate for the given reaction = ?

Q: 3. Calculate cell voltages under the following conditions at 25°C: a) ZnlZn* (0.50 M)I Cu" (0.10…

A: Given, Zn|Zn2+(0.50 M) || Cu2+(0.10 M)| Cu

Q: Why do alkanes, alkenes, and alkynes have a relatively low boiling point? O They have no large…

A: Boiling point: The temperature at which the vapor pressure of a liquid becomes equal to the…

Q: Calculate the entropy change when a 375-g sample of nitrogen gas is cooled from 25°C to 0°C at…

A: Here we have to determine the entropy change when 375 g of N2 gas is cooled from 25°C to 0°C at…

Q: After adding precise amount of HCl to antacid tablet, the contents of the flask were heated to…

A: Antacid is used to remove the acidity in stomach. Antacids are usually basic.  Antacid help to…

Q: If x represents the molar solubility of Ba3(PO4)2, what is the correct equation for the Ksp?

A:

Q: A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3…

A: First of all we have to calculate the moles of Fe2O3. From that only we get the moles of Fe and…

Q: Q10) A tablet that contained 500 mg of vitamin C (Molar Mass = 176 g/mol) was titrated with 20.15 mL…

A:

Q: Use your balanced chemical reaction from the above problem.   How many kilograms of the barium…

A: Given,  Ba(NO3)2 + K2SO4 ---> BaSO4 + 2KNO3 Mass of Ba(NO3) = 675.00 pounds.  The mass of barium…

Q: What is the Le Chatelier's Principle? How is it applied in reversible reactions?

A:

Q: What is the concentration of a phosphoric acid solution of a 25.00 mL sample if the acid requires…

A: At neutralisation point, number of moles of H+ is equal to number of moles of OH-  i.e. M1×V1 =…

Q: Vide an en Br show the Br AIBR3

A:

Q: A multivitamin sample has a label claim of 500 mg ascorbic acid (176.12 g/mol). According to quality…

A: For initial sample- NaOH required was 25.40mL and 0.1101M. Number of moles of NaOH, n = Molarity *…

Q: What is the pH range the buffer can maintain this buffer system: pyridine and pyridinium bromide?…

A: From Handerson Hesselblach equation  POH= Pkb + log(salt/base)  For Pyridine Kb= 1.8×10-9 POH= -log…

Q: 3. Calculate cell voltages under the following conditions at 25°C: a) Zn IZn* (0.50 M) lCư* (0.10…

A:

Q: 2. Calculate E°, AG° and K at 25°C for the reaction: 4CIO, (ag) - Cl (ag) + 3CIO, (aq)

A: Calculate E^0, delta G^0 and K at 25 deg celcius for the raction:4ClO3^-(aq)---->Cl^-(aq)…

Q: Titanium can be produced by electrolytic reduction from an anhydrous molten salt electrolyte that…

A: Answer: Reaction of formation of Ti(s) through electrolysis is TiCl4(l) is shown below:…

Q: 10.110 A 0.312 M KOH solution is used to titrate 15.0 mL of an H,SO, solution. (10.7) a. Write the…

A:

Q: What is the structural formula, molecular formula, and emprical formula of the following a. 2, 3,…

A:

Q: Molybdenum (Mo) crystallizes in a body-centered cubic lattice. The density of Mo is 10.2 g cm-3. a.…

A:

Q: ime of Time at dicator color equivalence point, s ange, s

A: Molecular equation,  HCl(aq.) + NH3(aq.) ---> NH4Cl(aq.)  Complete ionic equation,  H+(aq.) +…

Q: 1. The following data were obtained in an experiment in the reaction: A → products. Experiment 1 [A]…

A: Let us solve the question for 1st order reaction.

Q: 1. Consider the rate law: rate - k[Y]"(Z]. How are the exponents m and n determined? A. by…

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

Q: A 50.00 mL of 0.0275 M HCl solution was titrated with 0.1500 M NaOH. Calculate the pH of the analyte…

A: A numerical problem based on concentration terms that is to be accomplished.

Q: A) How many grams of Mgl2 is present in a 0.4745 g sample that is 53.21% Mgl2 (278.11 g/mol)? B)…

A:

Q: For breakfast, the nihilistic Rick Sanchez ate 100 g of cereal mixed with 20 g of milk. A 1.500 g…

A: Given: The molar mass of N (nitrogen) is 14.07 g/mol. For cereal: The amount of cereal consumed is…

Q: Calculate 2NaHCO3 = Na2O + 2CO2 + H20 (Show work please!)Mass of empty evaporating dish: 46.233g…

A:

Q: Br OCH2 CH3 Br

A:

Q: What is the molecular formula of Alkane, Alkene and Alkyne if n=4?

A: The Molecular formula of Alkane (n = 4) is C4H10.

Q: A) How many grams of Mgl, is present in a 0.4745 g sample that is 53.21% Mgl2 (278.11 g/mol)? B)…

A:

Q: Which is the best nucleophile for an SN2? A C Ме Me Li Me Li

A: Factors affecting the nucleophilicity : Nucleophilicity is the tendency of an atom or group of atom…

Q: Q4) Name of the technique that is used for Standardization of sodiums bydroxide solution is   a)…

A: acid-base titration   It is an acid-base titration. The sodium hydroxide is an alkali whose…

Q: ntify whether the following molecules are aromatic, antiaromatic or non-aromati b) c) d)

A: The following molecules are: a) - antiaromatic

Q: [Review Topics] [References] Use the References to access important values if needed for this…

A: Given,  Melting point = 1244 °c = 1244 + 273 = 1517 K □Hfus = 14.6 kJ/mol □S = n× □Hfus/T

Q: What is the mass (in grams) of a CO2 gas sample that occupies 5.71 L at STP

A:

Q: When you have an excess of the titrant, and you decide to add a second titrant to neutralize the…

A:

Q: Sketch the hydrogen bond(s) that form between ethanol and nitrogen trihydride and dihydrogen…

A:

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.