If I add 15 grams of sodium chloride to 250 grams of water, what will the...
what is the melting point of a solution in which 3 grams of sodium chloride is added to 170 ml of water? The cryoscopic constant of water is Kf=1.86Kkgmol-1.
4. A solution of sodium chloride is prepared by adding 6.0 grams of sodium chloride to enough water to make 100.00 mL of solution. (8 points) a. Calculate the mass/volume % of the solution b. Calculate the molarity of the solution 5. At STP conditions, what volume does 5.5 g of SO2 occupy? (5 points)
A student dissolves 10.3 g of sodium chloride (NaCl) in 250. g of water in a well-insulated open cup. She then observes the temperature of the water fall from 22.0°C to 21.5°C over the course of 4.4 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: NaCl(s) - Na (aq) + Cl" (aq) You can make any reasonable assumptions about the physical properties of the solution. Be...
If 1.378g of sodium chloride is dissolved in 30.0g of water then what would be the resulting concentration in molarity. Assume that the density of solution is 1.055 g/mL.
The freezing point of water is 0.00°C at 1 atmosphere. A student dissolves 12.54 grams of chromium(II) acetate, Cr(CH3COO)2 (170.1 g/mol), in 158.2 grams of water. Use the table of boiling and freezing point constants to answer the questions below. Solvent Formula Kb (°C/m) Kf (°C/m) Water H2O 0.512 1.86 Ethanol CH3CH2OH 1.22 1.99 Chloroform CHCl3 3.67 Benzene C6H6 2.53 5.12 Diethyl ether CH3CH2OCH2CH3 2.02 The molality of the solution is m. The freezing point of the solution is °C....
If you dissolve 2.19 grams of potassium chloride in 0.250 L of water, what is the molarity of the resulting solution? Include units in your answer.
dilution
If I add 25 mL of water to 125 mL of a 0.15 M NaOH solution, what will the molarity of the diluted solution be? (Your answer should be written as 0.XXX with no units) Question 2 0.2 pts If I add water to 100 mL of a 0.15 M NaOH solution until the final volume is 150 mL, what will the molarity of the diluted solution be? (Your answer should be written as 0XXX with no units) Question...
A 100.0 mL aqueous sodium chloride solution is 13.9 % NaCl by mass and has a density of 1.12 g mL−1. What mass of solute would you add to make the boiling point of the solution 104.8 ∘C ? (Use i = 1.8 for NaCl)
hey i really need help for the molality to mass question. the
solvent is water and 100g. SOS!
Table 3: Data obtained for the boiling point elevation simulation. (3 marks) Solute Molality (mol/kg) Solution Boiling Point (°C) NaCl(s) 0.0000 100.00 AT) (°C) 0.0 NaCl(s) 0.1711 NaCl(s) 0.3422 NaCl(s) 0.6844 NaCl(s) 1.3688 CaCl2(s) 0.1711 C12H22011(s) 0.1711 Molality to Mass Sample Calculation: (1 mark) PART 3 BOILING POINT ELEVATION 16. Visit this webpage: https://pages, oregon.edu/tgreenbo/colligative.html; the screenshot (Figure 5) below should be...
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...