A solution is made by dissolving 6.60 grams of MgCl2 in 380.0 mL of water. What is the freezing point of this solution (in °C)? Express you answer to 3 significant digits. Density of water= 1.00 g/mL Kf of water= 1.86

Q: Lindsay A chemist makes 530. mL of calcium bromide (CaBr,) working solution by adding distilled…

A: A stock solution is a concentrated solution that will be diluted to some lower concentration for…

Q: The solubility of CoCl2 in water is 52.9 g of CoCl2 per 100 g of water. 105.3 g of CoCl2 are added…

A: Given: The solubility of CoCl2 in water is 52.9 g of CoCl2 per 100 g of water. 105.3 g of CoCl2 are…

Q: solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of water. The density of the resulting…

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Q: solution is 12.3% ethanol in water. If 10.5mL of ethanol is in the solution, what is the volume of…

A: % of ethanol = 12.3  Volume of ethanol = 10.5

Q: Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm…

A: Given : Mass of water in swimming pool = 8.45 X 104 gallons  Mass percent of chlorine = 6.00 %  And…

Q: student is asked to make up a 16% sodium chloride solution. She makes the solution by weighing an…

A: Given that: Mass of the beaker = 98.56 g Mass of the beaker and sodium chloride = 114.71 g Mass of…

Q: A group of students were weighing some CaCl2(s) but they forgot to record the mass.  They know that…

A: Given  Volume of solvent ( water ) = 50 ml Density of water = 1 g/ml Freezing point of pure solvent…

Q: What is the mass % of ethylene glycol in a 2.61 M solution of ethylene glycol (MM = 62.07 g/mol) in…

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Q: An insulin solution is given to a patient suffering from hyperglycemia at the rate of 20.0 mL/hr.…

A: The rate of any process is amount of the substance flow per unit time.  The unit time may be in sec,…

Q: A saline solution contains 0.92% (w/v) NaCl in water. What volume (in mL) of the saline solution…

A: Given in following question a saline solution contains 0.92%w/v   NaCl in Water.  What volume of the…

Q: A chemistry student weighs out 45. g of an unknown solid compound X and adds it to 750. mL of disti…

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Q: At a certain temperature, an aqueous solution is 16.5% K2CO3 by mass and has a density of 1.149…

A: Given: density of solution = 1.149 g/cm3 Molar mass of K2CO3 = 138.205 g/mol Mass percent of…

Q: Nurses are often required to calculate dosages. That is, they must check the order that a doctor has…

A: Answer is given below

Q: What is the freezing point of 0.0225 m aqueous calcium chloride, CaCl2? Use the formula for the salt…

A:

Q: Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm…

A: In the given question we have to calculate the volume of chlorine solution in millilitres a…

Q: A chemist prepares a solution of barium acetate  BaCH3CO22  by measuring out  27.μmol  of barium…

A: Given: No of moles of Barium acetate = 27μmol Volume of acetate solution = 250mL = (250/1000)L =…

Q: Determine the amount of potassium chloride in each solution. 18.5 g of a solution containing 1.08…

A: Since, mass%=mass of solutemass of solution×100

Q: A sample of air, with a mass of 5.0 kg, contained carbon monoxide with a concentration of 12 parts…

A: We have given that  A sample of air with a mass of 5.0 kg, contained carbon monoxide with a…

Q: What volume of water (in mL) is needed to prepare a 1.67 M solution using 12.6 mL of 6.04 HCl…

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Q: An average adult has 6.0 L blood. The red cross usually takes 1 pint of blood from each donor at a…

A: The volume of blood present in an average adult is = 6.0 L The volume of blood donated by a person…

Q: Nurses are often required to calculate dosages. That is, they must check the order that a doctor has…

A:

Q: A chemist must dilute  40.6mL  of  105.μM  aqueous silver(II) oxide  AgO  solution until the…

A: Given: Initial concentration (original solution), M1 = 105 μM The initial volume (original…

Q: Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm…

A: The values are given as follows:

Q: 227 mL of a 3.2 M solution of KBr is diluted to 731 mL.  What is the new concentration of the…

A: The process of dilution is defined as the process in which a solution with a lower concentration is…

Q: A chemistry student weighs out 72. g of an unknown solid compound X and adds it to 550. mL of…

A: An student weighs out 72. g of an unknown solid compound X and adds it to 550. mL of distilled water…

Q: In which scenario is water the solvent? a. Seven drops of water added to 27.5 g of salt b. 12.8 mL…

A: Given, which scenario, water act as solvent?

Q: A chemist adds 75.0 mL of a 3.20 g/dL potassium dichromate (K,Cr,0, solution to a flask. Calculate…

A: Concentration of potassium dichromate(K2Cr2O7) = 3.20g/dL Volume of the solution = 75.0ml = 75.0ml ×…

Q: A certain antihistamine is often prescribed for allergies. A typical dose for a 100​-pound person is…

A: Given  For a 100 pound person  Dosage = 20 mg/6hrs

Q: What is the boiling point of 0.0585 m aqueous

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Q: The density of toluene (C7 Hs) is 0.867g/mL, and the density of thiophene (C,H4S) is 1.065 g/mL. A…

A: Solution

Q: A 125ml sample of an 8.2 M NaCl solution is diluted to 3.0 L . What volume of the diluted solution…

A: Concept:  Upon dilution the moles would remain constant , using this we can predict the new Molarity…

Q: III: Sucrose is the chemical name for the sugar we consume. Its solubility at 20°C is 204 g/100 g…

A: We can easily calculate the amount of soluble sugar in the given water at that particular…

Q: determine that a 5.0 mL solution of CuSO4 has a mass of 5.76g. The solution is evaporated to dryness…

A: Volume of solution = 5.0 ml Mass of CuSO4 solution = 5.76 gm Mass of solid after evaporation  = 1.01…

Q: Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm…

A: The mass of water in the pool is calculated as,

Q: A chemist must dilute  49.9mL  of  973.mM  aqueous aluminum sulfate  Al2SO43  solution until the…

A:

Q: A student pipetted 10 mL of a sample solution into a 250 mL volumetric flask and diluted it to the…

A: At first 10 mL of original solution is taken in 250 mL flask and the rest 240 mL of water is added…

Q: To identify a metal, an experimenter placed, 4850cg sample in a graduated cylinder. He then poured…

A:

Q: Calculate the Normality of Hcl of a solution that contains 45 g in 325 ml of water, knowing that the…

A:

Q: When 25.0 grams of NaCl are dissolved in 675. grams of water, an expression for the resulting…

A: Given: Weight of NaCl = 25.0 g Weight of water = 675 g

Q: The "normal" concentration of lead in blood is 0.40 parts per million (meaning, for example, 0.40 g…

A:

Q: Aqua regia is an acid mixture that can be used to dissolve gold. Aqua regia has a density of 1210.…

A:

Q: A certain organic compound O has a solubility in hexane of 0.780 –- at 10. °C. Calculate the…

A: In this question, we will calculate the greatest mass of organic compound O dissolved in hexane. You…

Q: Calculate the Normality of Hcl of a solution that contains 45 g in 325 ml of water, knowing that the…

A:

Q: A group of students were weighing some CaCl2(s) but they forgot to record the mass.  They know that…

A:

Q: 1. A student prepares a 600.0 mL of 500.0 ppm of glucose solution. What volume of this solution (in…

A: Given,  Volume of the solution = 600.0 mL  Concentration of glucose solution in ppm = 500.0 ppm…

Q: compound? element? solution? heterogeneous? pure substances? a. soda pop b. used motor oil freshly…

A: Compound is defined as two or more elements mixed together then compound formula Mixture is defined…

Q: You have a patient who weighs 95 pounds. The dosage of a drug is 1.5 mg drug per kg of body mass.…

A: First we need to understand which unit convention are used in the question and which we want to use…

Q: You are given 250 mL solution and need to adjust the drip rate for a patient. Before you begin you…

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Q: A patient needs to receive 85 grams of glucose every 12 hours. What volume of a 5.0% (m/v) glucose…

A: Given: Mass of glucose required every 12 hours = 85 g. And the %(m/v) of the solution = 5.0 %