Suppose that an experiment required that 250 ml of a 35 ppm aqueous dipotassium phosphate (K2HPO4) solution be prepared from a 0.1 M stock K2HPO4 solution prepared earlier. What volume of the concentrated KHPO4 solution would be needed? (Water density = 997 g/L at 25°C and MW of KHPO4 = 174 g/mol) %3D

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Q: An oral antibiotic is available as a powder for reconstitution. At the time of dispensing, the…

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Q: 240 220 200 180 160 NACIO3 Solubility 140 (g/100 g of H20) 120 KNO3 KBr 100 80 60 NaCI 40 20 20 40…

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Q: 2. Suppose a standard mixture of antifreeze contains 500. mL ethylene glycol (557 g) in water, in a…

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Q: A solution containing 15.2 grams of an unknown nonelectrolyte in a 150.0mL total volume produced as…

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Q: Calculate the number of mmoles of solute that are present in 4000 cm³ of an aqueous solution that…

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Q: A solution of NaNO3 contains 120 grams of solute dissolved in 100 grams of water. At 50°C this…

A: From the graph ,   Solubility of NaNO3 at 50°C = 113 g/100 g water (less than 120 g) If the amount…

Q: 1. What is the molarity of a solution in which 150g of Ca© are dissolved in 190ml of solution? (MW:…

A: Formula used:  Molarity: no of Mole/Volume in L  Molality: no of mole of solute/ weight in kg of…

Q: Concentrated reagent of sodium hydroxide (NaOH, 39.997 g/mol) has a molarity of 17.6 M and its…

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Q: CONCENTRATION OF SOLUTIONS 1. Express the concentration of a solution (%w/w, %v/v and %w/v)…

A: Hello. Since multiple questions have been posted, the first question shall only be solved in this…

Q: A 12.5 % by mass solution of ethanol (C2H5OH) in water has a density of 1.225 g/ml at 20°C. What is…

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Q: Two beakers are placed in sealed box at 25 o C. One beaker contains 30.0 ml of 0.05 M aqueous…

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Q: A 12.5 % by mass solution of ethanol (C2H5OH) in water has a density of 1.225 g/mL at 20°C. What is…

A: In this question, we will findout the Molarity of the Solution.  How you will determine the Molarity…

Q: A solution of an unknown nonvolatile nonelectrolyte was prepared by dissolving 0.250 g of the…

A: Given Mass of solute = 0.250 g mass of pure solvent = 40 g ΔT = 1.8°C boiling point of pure solvent…

Q: What are the mole fraction and the mass % of a solution made by dissolving 0.50 g KI in 0.500 L of…

A: Mass of KI = 0.50 g Volume of water = 0.500 L                              = 0.500 × 1000 mL…

Q: At 55.0 ∘C, what is the vapor pressure of a solution prepared by dissolving 75.8 g of LiF in 247 g…

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Q: A student has made a solution that contains 43 g of NH3 at 60°C. what type of solution would this be…

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Q: To determine the freezing point depression of a LICI solution, Toni adds 0.378 g of LiCI to the…

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A: Hi, we are supposed to answer one question. To get the remaining questions solved please mention the…

Q: Calculate the number of moles and mass of CuSO4·5H2O(s) required to prepare 100.0 mL of 0.100 M…

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Q: Abuela asked Mirabel to perform an experiment on freezing point depression. The solution was…

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Q: How many liters of commercial 5% bleach solution would be used to prepare 50L of 1% bleach solution?…

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Q: I just want to be sure if my answers (and units) are correct: 1. What is the molarity of a 750 mL…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: 3 g of sugar and 100. mL of water what is w/w% assume solution density of 1.0 g/mL

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Q: THe solubility of ammonium chloride at 700C is 60g of solute per 100g of water. Which solution would…

A: Answer - Solubility - Solubility is the ability of a solid, liquid, or gaseous chemical substance…

Q: 8. Calculate the mole fraction of water in the solution described in Q5. The density of pure water…

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Q: Calculate the parts per million (PPM) for 56 mg of total dissolved solids in 0.530 kg of solution.…

A: Answer is 105.7ppm

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Q: How many grams of CaCl, are needed to make 728.4 g of a solution that is 40.0% (m/m) calcium…

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Q: The solubility of MnSO4 . H2O in water at 20 °C is 70 g per100 mL of water. (a) Is a 1.22 M solution…

A: a) Assuming we have 100 mL solution of MnSO4 . H2O. Hence moles of MnSO4 . H2O = molarity X volume…

Q: SOLUBIITY CURVES KI 140 130 120 100 NONO 90 KNO HCI, 70 NH CI NH3 60 KCI 50 40 NaCi 30 KCIO 20 SO2 O…

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Q: What is the molarity of a solution of ammonium chloride (MM = 53.5) consisting of 1.55g of ammonium…

A: mass of ammonium chloride = 1.55gMolar mass of Ammonium chloride = 53.5 g/moleNo of moles of…

Q: When 0.33 mols of benzene is mixed vwith 0.62 mols of hexane, what is the total vapor pressure above…

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Q: In performing an experiment on freezing point depression, the solution was prepared by dissolving…

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Q: what is the Normal concentration of a solution that is 4 percent KHSO4 by weight and has specific…

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Q: 90 g of KCI is dissolved in 250 g of water at 35 celcius with 80% dissociation. www Calculate the: .…

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Q: To prepare 100 ml of 0.40 M NaCl solution from a 1.0 M solution you should mix: a) 40 ml of 1.0 M…

A: To prepare 100 ml of 0.40 M NaCl solution from a 1.0 M stock solution, the volume of stock solution…

Q: How much water would you add to 70. mL of this stock solution to make 1.5% (m/v) dextrose?Tabulate…

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