How many moles of Ba(OH)2 are present in 225 mL of 0.200 mol L Ba(OH)2?

Q: what volume (in L) of a 2.55 M sodium chloride solution contains 5.56 moles of sodium and chloride…

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Q: What mass of calcium chloride dihydrate, CaCl2•2H2O is required to prepare 100.0 mL of a 0.224 M…

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Q: How many milliliters of 12.0 M HCI(aq) are needed to prepare 595.0 mL of 1.00 M HCI(aq)?

A: Given: The initial concentration of HCl, (M1) = 12 M. The final concentration of HCl, (M2) = 1.0 M.…

Q: An aqueous solution contains 2.52 g of Pb(NO3)2 in one liter.  How many moles of each ionic species…

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Q: How many moles of AgNO3 are there in 1.53 L of a 1.25 M solution?

A: Given, Volume of the solution=1.53 L Molarity of the solution=1.25 M No of moles of solute(AgNO3)=?

Q: If 1.5234 grams of H2C2O4·2H2O is dissolved in water to prepare a 0.250 L solution, what is the…

A: Formula to calculate molarity:                        Molarity=mass of solute(g)molar mass of solute…

Q: How many grams of solute are present in 855 mL of 0.880 M KBr?

A: We can determine the mass of solute, KBr present in the given solution from the number of moles of…

Q: What volume of a 1.50 M lithium hydroxide (LiOH) would contain 0.45 moles of LiOH?

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Q: A sample of 7.89 g of Mg(OH)2 is added to 24.6 mL of 0.190 M HNO3. How many moles of HNO3 are…

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Q: What mass of calcium chloride dihydrate, CaCl2•2H2O is required to prepare 100.0 mL of a 0.21 M…

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Q: What is the molarity of a solution prepared by dissolving 64.9 grams of Pb(NO3)2 in enough water to…

A: The number of moles of lead nitrate are as:

Q: the molarity of this solution

A: Given data, Weight of Oxalic acid = 0.0620 g Molar mass H2C2O4.2H2O = 126.07 g/mol Volume of…

Q: What mass of calcium chloride dihydrate, CaCl2•2H2O is required to prepare 100.0 mL of a 0.21 M…

A: The objective of this question is to find out the mass of calcium chloride dihydrate (CaCl2•2H2O)…

Q: How many moles of KBr are there in 68.2 mL of 0.150 M KBr?

A: The question is based on the concept of solutions.   molarity is a method of expressing…

Q: A solution is created by dissolving 10.0 grams of ammonium chloride in enough water to make 205 mL…

A: Number of moles of a compound is related to its mass by the following relation: Number of moles of…

Q: a chemist wants to make 5.5 L of a 0.300 M CaCl2 solution. What mass of CaCl2 (in g) should the…

A: Given : Concentration of CaCl2 = 0.300 M And volume of solution = 5.5 L

Q: A sample of 0.0255 mol potassium hydroxide (KOH) was dissolved in water to prepare 10.0 mL of…

A: we know molarity is defined as the number of moles of solute dissolved in the per litre solution. we…

Q: 100 mL of a 0.55 M Ca(OH)2 solution contains how many grams of Ca(OH)2?

A: Given:Volume = 100 mL = 0.1 L.Molar mass = 74.092 g/mol.Concentration (Molarity) = 0.55M.

Q: How many grams of anhydrous copper(II) nitrate, Cu(NO3)2, are needed to prepare 500.0 mL of a 0.0750…

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Q: What is the concentration of a solution of 0.564 moles of Ba(OH)2 in 124.0 mL of water?

A: The concentration of a solution is generally explained in terms of its molarity. Molarity of a…

Q: How many moles of NaOH are present in 27.0 mL of 0.110 M NaOH?

A: Molarity is one of the concentration term which is used to define the concentration of a solute in a…

Q: How many milliliters of 12.0 M HCl(aq) are needed to prepare 595.0 mL of 1.00 M HCl(aq)?

A:

Q: What mass of calcium chloride dihydrate, CaCl2•2H2O is required to prepare 100.0 mL of a 0.211 M…

A: The objective of this question is to calculate the mass of calcium chloride dihydrate (CaCl2•2H2O)…

Q: what is the molarity of the solution?

A:

Q: What mass (in grams) of Mg(NO3)2 is present in 200 mL of a 0.500 M solution of Mg(NO3)2?

A: The mass is determined by using molarity formula. The molarity is expressed as follows,

Q: How many moles of the nitrate anion, NO3-1, are there in a 0.015 L sample of 0.15M Pb(NO3)2(aq)…

A: Given, the volume of solution =0.015 LConcentration of Pb(NO3)2(aq) =0.15 Mwe are asked to calculate…

Q: Calculate the molarity of 22.5 g of NaOH in 370. mL of an NaOH solution.

A: Molarity is defined as the number of moles of solute per volume of the solution in liters. i.e.…

Q: Two solutions, A and B, are labeled "0.14 M CaCl2" and "0.42 M CaCl2", respectively. Both solutions…

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Q: How many grams of NaCl are in a 635mL solution of 3.00 M NaCl(aq)?

A: Molarity of solution = 3.00 M Volume of solution = 635 mL = (635/1000) L = 0.635 L Volume of…

Q: How many moles of Mg(ClO2)2 are present in 60.0 mL of 1.00 M Mg(ClO2)2 solution?

A:

Q: What mass of oxalic acid dihydate, H2C2O42H2O, is needed to make a 0.498 mol solution of oxalic acid…

A: Given, Number of mol H2C2O4.2H2O = 0.498 mol Volume = 250.0 mL Since, 1000 mL = 1 L  or        1 mL…

Q: How many moles of NaOH are present in 25.0 mL of a 0.1000 M NAOH solution? O 0.100 mol O 100 mol O…

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Q: How many grams of NaOH are required to prepare 240. mL of a 3.50 M NaOH solution?

A: Molarity is one of the ways to represent the concentration of the solution.  Here we are required to…

Q: How many grams of solute are present in 90.0 mL of 1.33 M CoSO4?

A: Volume = 90.0 mL Concentration of CoSO4 = 1.33 M

Q: How many milliliters of 10.0 M HCl(aq) are needed to prepare 920.0 mL of 1.00 M HCl(aq)?

A: • The values provided in the question are:-       i) Initial concentration of HCl solution, M1 =…

Q: How many grams of NaOH are there in 333. mL of a 0.90 M NaOH solution?

A: The molarity of any solution is defined as the ratio of no of moles of the solute to that of volume…

Q: How many grams of solute are needed to make 5.00 × 102 mL of 0.445 M CH3OH?

A: Given,Molarity = 0.445 MVolume = 5.00 x 102 mL

Q: A chemist wishes to prepare 1250 mL of a 1.34 M aqueous solution of sodium hydroxide, NaOH (40.0…

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Q: What mass of calcium chloride dihydrate, CaCl2•2H2O is required to prepare 100.0 mL of a 0.211 M…

A: According to the question, The volume of the solution is given by =100.0 mL = 0.1 LThe molarity of…

Q: How many moles of sulfur are there in 280.0 mL of a 0.150M solution of Fe2(SO4)3?

A: 1. Mole is a quantitative approach, which can be use for the calculation of atoms or molecules in a…

Q: What is the molar concentration (molarity) of a solution made by dissolving 0.245 moles of…

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.