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Calculate the mass of solution (in grams) that contains 6.75gKOH and has a concentration of 20.0%...
What is the pH of this solution prepared by dissolving 0.28 grams of KOH in 250 mL of solution? (molar mass KOH = 56.11 g/mol)
Question 21 A solution contains 478 grams of ethylene glycol (C2H4O2) in 3202 grams of water. Calculate the molality of the solution Molar mass of ethylene glycol = 62 g/mole; Molar Mass of water = 18 g/mole 2.41 m 0.372 m 24100 m 0.149 m
Calculate the molarity of a 200 mL HCl solution if the solution contains 5.43 grams of HC:i HCl molar mass 36.46 g)
A 2.78 L aqueous solution of KOH contains 183 g of KOH. The solution has a density of 1.29 g/mL. Calculate the molarity (M), molality (m), and mass percent concentration of the solution. molarity: 1.175 M molality: m mass percent:
12) You are preparing 960.0 grams of an aqueous solution that contains that contains 32.00% by weight of Na2CO3. What mass of solute would you use and what mass of solvent would you use? [4 points) ider 13) What is the weight percent of a calcium chloride (CaCl2] solution that is made by dissolving 151.6 grams of CaCl in 648.4 grams of water? [4 points) 14) Calculate the new molarity of a 20.0-ml sample of 4.50 M MgCl2 solution that...
1. What is the molar concentration of a solution that contains 10 grams of KCl in 500 ml of DI water? (MW of KCI = 74 g/mol) a. What is the osmolarity of this solution? b. What is the tonicity of this solution? c. What would happen to a normal red blood cell that was put into this solution?
A) Calculate the molality of a sucrose solution made by dissolving 73.1 grams sucrose into 55.3 grams water. The molar mass of sucrose is 342.2 g/mol. Record your answer in scientific notation using 3 significant figures. Use * for the multiplication symbol. B) A sodium hydroxide solution that contains 55.5 grams of NaOH per L of solution has a density of 1.14 g/mL. Calculate the molality of the NaOH in this solution. Record your answer to 2 decimal spaces. C)...
1.A solution that contains 15.581 grams of benzene (molar mass = 78.1 g/mol) in 420 g of cyclohexane freezes at a temperature 9.50 ºC below the freezing point of pure cyclohexane. Calculate the molar freezing point depression constant, Kf, for cyclohexane. 2. The molar boiling point elevation constant for water is 0.512 ºC/m. What is the boiling point of a solution containing 673 g of water and 78.0 g of CaCl2? 3. A solution containing 32.0 g of an unknown...
5 points A mass of 0.4231 grams of an unknown monoprotic acid was neutralized with 13.57 ml of a 0.3026 M solution of KOH. Calculate the molar mass of the acid Reports in grams with dem but no units
Question A 20.0 mL sample solution contains unknown amount of bromide ion (Br). To this solution was added the solution that contains plenty of AgNO3. AgBr precipitates were formed. The precipitate were filtered and measured to be is 0.6964 g. What is the molarity of bromide ion in the original sample solution? The molar mass of Br = 80.0 g; the molar mass of AgBr = 188 g. (Solution) AgNO, is soluble and thus exists Ag+ ion and NO3-ion. Ag+...