
Question 16 4 pts What mass (in g) of NH3 must be dissolved in 475 g...
What mass of KBr must be dissolved in 902 g of methanol to make a 0.300 m solution? 32.2 g 2.27 g 39.6 g 22.5 g
4. What is the mass % of NaCl if 15 g sodium chloride are dissolved in 374 g H2O? (Hint: don't forget that solution mass = solute + solvent mass.) 5. What mass of acetic acid (HC2H302 = 60 g/mol) must be dissolved in 1340 g H2O to produce a 2.75 m solution? 6. What is the new volume of a solution if 437 mL of a .968 M solution are diluted to a .315 M solution? 7. One solution...
When 4.84 g4.84 g of a nonelectrolyte solute is dissolved in water to make 475 mL475 mL of solution at 26 °C,26 °C, the solution exerts an osmotic pressure of 867 torr.867 torr. What is the molar concentration of the solution? concentration: MM How many moles of solute are in the solution? moles of solute: molmol What is the molar mass of the solute? molar mass: g/mol
What mass of NaClO must be dissolved in 450 g of deionized water to make a 100 ppm solution? Assume the density of the resulting solution is 1.00 g·mL-1.
Question 8 2 pts Consider the following data. mass of empty beaker = 34.981 g mass of beaker and NaOH = 37.095 g What is the molarity of the resulting solution when this amount of sodium hydroxide is dissolved in enough water to make 500 mL of solution. O.121M 0.130 M 0.112M .106M
16. You synthesized 3.204 g of Ni(NH3)nCl2. The mass percent of NH3 and Ni2+ in the synthesized Ni(NH3)nCl2 were 44.1% and 25.3%, respectively. Molar mass of Ni2+ , NH3 and Cl2 are 58.69 g/mol, 17.04 g/mol, and 70.90 g/mol, respectively. a) (1 pts) Calculate the mass percent of Cl2. b) (1 pts) Calculate the masses of Ni2+ , NH3 and Cl2. c) (1 pts) Calculate the number of moles of Ni2+ . d) (1 pts) Calculate the number of moles...
Question 10 2.5 pts A 61.08-g sample of Ba(OH)2 is dissolved in enough water to make 1.800 liters of solution. How many mL of this solution must be diluted with water in order to make 1.000 L of 0.100 M Ba(OH)2 3.57 mL 198 mL 19.8 ml 280 mL 505 mL 2.5 pts
5. What mass of bacta (FW: 192.095 g/mol), a nonelectrolyte, must be dissolved in 5000.0 g of ambori to give a solution with a freezing point of -1.50°C? What is that solution's boiling point? The normal boiling point of ambori is 84°C. The K of ambori is 39.7°C/m and the Ko of ambori is 2.34°C/m. (10 points)
A 3.00 g sample of [Co(NH3),cicl, is dissolved in water. Calculate the mass (in grams) of AgCl(s) produced when excess AgNO, is added to the solution. (Do not include units in your answer. If you round during your calculations make sure to keep at least 3 decimal places. Report your answer to 2 decimal places.) Answer:
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What compound can be dissolved into an aqueous solution of barium chloride that will precipitate the barium ions out of the solution? There are many correct answers. You must write only one. 4 Nitrogen monoxide gas reacts with hydrogen gas to form ammonia and water gases. How many grams of hydrogen are needed to make 6.22 g of NH3(g)? Show all work and units. 8 25.1 mL of a 1.19 M aqueous...