(optional) Blue turquoise is an example of a hydrate mineral containing copper; the chemical formula is CuAl6(PO4)4(OH)8 •4H2O. What is the percent water in this semiprecious stone?

Q: Distillation is a physical process of separation of liquids that differ in what physical property?…

A: Distillation is a process of separating mixtures based on differences in their volatile in boiling…

Q: 100 mL 0.25 M NH4OH, 4 g Ca(NO3)2·4H2O, and/or 3 g (NH4)2HPO4.Determine the mass or volume of each…

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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…

A:

Q: sample of water contains 114 ppm of chloride  ions. What is the concentration of chloride ions in…

A: Given-> Concentration of chloride ion = 114 ppm

Q: To measure the amount of citric acid and titrates this solution to the endpoint with 15.7 mL of…

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Q: (b) Draw a more accurate representation of one unit of C,H,O, dissolved in water.

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Q: parts per million

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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: What mass of sodium sulphate is required to prepare 500.0 cm3 of 1.30 M sodium sulphate solution?…

A: Molarity is a concentration term for a solution. The molarity of a given solution is defined as the…

Q: What is the concentration of an aqueous sucrose solution that is prepared by dissolving 171.2 g of…

A:

Q: To measure the amount of calcium carbonate (CaCO3) in a seashell, an analytical chemist crushes a…

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Q: The concentration of sodium chloride in seawater is approximately 0.481 M NaCl.  How many grams of…

A: The molarity of a solution represents the number of mol of solute present in 1 L of the solution.…

Q: 2. How many grams of water will be lost when 8.000 g of YBr3'9H2O is heated?

A: Amount of YBr3•9H2O = 8 g  Amount of water lost after heating = ?

Q: What mass (in g) of HCl is contained in 45.4 mL of an aqueous HCl solution that has a density of…

A: Volume of an aqueous HCl solution = 45.4 mL  Given that density of 1.084 g·cm−3 at 60°C that means…

Q: Write a balanced chemical equation for the reac- tion of bromine and triolein, a triglyceride of…

A:

Q: For the chemical equation  2HBr (aq) + Ba(OH)2 (aq) yields to 2H2O (L) + BaBr2 (aq)  write the net…

A: Net ionic equation involves only the ions that actually take part in the reaction excluding the…

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: What is the molar concentration of a solution containing 75.0 g benzoic acid, HC7H5O2, in 650. mL of…

A:

Q: What is the molar concentration of a solution prepared by dissolving 2.46 g of Li2SeO3 in enough…

A:

Q: The sample contains CaCl2 and its concentration was 0.03M. Calculate grams of CaCl2 present in 100…

A:

Q: Silicon used in computer chips must have an impurity, level below 10 9 (that is, fewer than one…

A: In the given question we have to calculate the ratio of B atoms to Si atoms.The following data is…

Q: A sample weighing 3.056 g is a mixture of Fe, O, (molar mass = 159.69 g/mol) and Al, 0, (molar mass…

A:

Q: How many grams of NaCl are needed to prepare 17.3 mL of a 0.46 M NaCI (aq) solution?

A: Given that:  Molarity of NaCl = 0.46M Volume = 17.3ml = 17.3ml×1L/1000ml = 0.0173L  We know, molar…

Q: If 0.42 mg calcium fluoride, CaF2 is used as above to add fuoride to the drinking water, does CaFz…

A: Given that 0.42 mg CaF2 is used to add fluoride in drinking water.We have to find between 0.42 mg of…

Q: You have a flask weighing 121.214 g. To this flask, you added 25.00 mL KCl(aq) solution. You weigh…

A: molality is a method of expressing concentration of the solution. it is defined as number of moles…

Q: Blue Color terdrops why did water droplets form at the mouth of the test tube when heated? When the…

A: Consider the test tube with some water. When this test tube is placed in hot water or heated, the…

Q: Calculate the theoretical percentage of water in Cu2SO4·2H2O (Molar mass of the hydrate is 259.19…

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Q: what is the mole fraction of 4.31 m KBr (aq)?

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Q: Calculate the molarity of sodium thiosulphate (vi) pentahydrate, Na2S2O3.5H2O.

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Q: Chlor-alkali plants electrolyze NaCl to produce the commodity chemicals caustic soda and chlorine…

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Q: If a solution of H2SO4 has a normality of 8.00, how many grams would be in 500.mL of that solution?…

A: grams of H2SO4  Molarity of H2SO4

Q: You are required to prepare 2 L of a solution containing 2.000 x 103 mol/L of Cu2*(aq). Which of the…

A: Molarity of a solution is defined as the moles of solute present in one litre of solution.

Q: Calculate the percent water (by mass) in zinc sulfate heptahydrate, ZnSO4·7H2O

A: Mass of Zn = 65.38 g 1 mol Zn contains mass = 65.38 g Zn  Mass of SO4 contained in one mol= 96 g…

Q: A chemist prepares a solution of vanadium III bromide VBr3 by measuring out…

A:

Q: 1. Calculate the theoretical percentage of water for the following hydrates. (a) manganese(II)…

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: If 0.42 mg calcium fluoride, CaF2 is used as above to add fuoride to the drinking water, does CaFz…

A: Given that , Volume of water = 250 mL  Weight of CaF2 and NaF are same i.e.0.42mg = 0.00042 g…

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.