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Question 9 (1 point) A solution with a total volume of 651 mL has 10.98 g...
13 A solution is prepared by dissolving 10.98 g of MgCl2 in 646 mL of water. The total mass of the solution is 656.98 g. and the total volume is 651 mL. a What is the mass-mass percent concentration of MgCl2 in the solution? Show your work. b What is the mass-volume percent concentration of MgCl2 in the solution? Show your work. c What is the molarity of the MgCl2 in the solution? Show your work.
An aqueous solution of MgCl2 that is 27.5% (mass%) and has a solution density of 1.25 g/mL. MgCl2 has a molar mass of 95.211 g/mol. What is the molarity of this MgCl2 solution?
Question 43 4 pts Molarity & solution concentration: Your answers need to have the correct number of significant figures. What's the molarity of a solution containing 48.5 g of MgCl2 (Molar mass = 95.21 g/mol) in 1.75 L volume? HTML Edita
erksheet 7-Rey 10 A 10.0 mL sample of sodium chioride solution that has a mass of 16.78 g is placed in an Solutions evaporating dish and evaporated to dryness. The residue has a mass of 6.55 g. Calculate the following concentrations for the NaCl solution mass/mass (m/m) percent mass/volume (m/v) percent malarity A 4.00 % (g/mL) KI solution has a volume of 65.0 mL. How many grams of KI are in the sample? How many grams of a 35% (...
A 4.691 g sample of MgCl2 (95.21 g/mol) is dissolved in enough water to give 750.0 mL of solution. What is the chloride (35.45 g/mol) ion concentration (in molarity) in this solution?
Question 1 (1 point) A 52.30 g sample of Ba(OH)2 is dissolved in enough water to make 1.20 L of solution. How many milliliters of this solution must be diluted with water in order to make 1.00 L of 0.100 M Ba(OH)2? 62.8 mL 254 mL O 305 ml O 523 mL O 393 mL O Question 2 (1 point) A chemist needs 225 mL of 2.3 M HCl. What volume of 12 M HCl must be dissolved in water...
An aqueous solution of MgCl2 that is 27.5% (mass%) and has a solution density of 1.25 g/mL. MgCl2 has a molar mass of 95.211 g/mol. What is the molarity of this MgCl2 solution?
need help! with work shown also! Free Response. Answer each question or solve each problem below. All work for mathematical problems must be shown to receive full credit. Circle or box your final answer. (44 pts) 1. A 50.0 mL aqueous solution is initially 1.55 % MgCl2 by mass and has a density of 1.05 g/mL. An additional 1.35 g of MgCl2 (molar mass = 95.21 g/mol) is dissolved to make a new solution a. Determine the molality of the...
Table 1. Sodium Acetate Solution Data Mass of Sodium Acetate (g) Volume of Sodium Acetate (mL) Concentration of Sodium Acetate Solution (M) 4 100 ?? Show your work for the calculation of the concentration (in molarity) the sodium acetate solution in Table 1 (in Question 2 above). Include units. NOTE: The molar mass of sodium acetate is 82.0343 g/mol.
Trial 1 Acetic acid / L solution 2.402g/L Volume of acetic acid (mL) 30 mL Initial buret volume (mL) 0.2 mL Final buret volume at end point (mL) 18.2 mL Total volume of NaOH titrated (mol) 18.0 mL Moles of NaOH titrated (mol) Molarity of acetic acid (mol/L) Molar mass of acetic acid Average volume of NaOH titrated mL Average molar concentration of acid Average molar mass of acetic acid