A 3.00 g sample of [Co(NH3),cicl, is dissolved in water. Calculate the mass (in grams) of...
A 5.11 g sample of a compound is dissolved in 154.7 g of benzene. The freezing point of this solution is 1.00°C below that of pure benzene. The compound is a nonelectrolyte. What is the molar mass of this compound? K for benzene = 5.12(°C kg)/mol. (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 the nearest whole number.) AT=i Kh Msolute AT...
A 12.42 g sample of a mixture of NaClø and CaCl2ø) was dissolved in water. Excess AgNO was added and all of the chloride was precipitated as AgCl. 31.70 g of AgCI was collected. Calculate the %w/w of NaCl in the original mixture.
A 0.8690 g sample of a mixture of NaCl and KCl is dissolved in water, and the solution is then treated with an excess of AgNO3 to yield 1.933 g of AgCl. Calculate the percent by mass of each compound in the mixture. % mass NaCl = ? % mass KCl = ?
1. A sample of hydrochloric acid (HCI), which is an acid, with a mass of 0.7302 g is dissolved in water and used to standardize a solution of barium hydroxide. An endpoint is reached when 47.81 mL of barium hydroxide has been added. Determine the molarity (in mol/L) of the barium hydroxide solution. Report your answer to four significant figures. Submit Answer Tries 0/13 2. The standardized barium hydroxide solution is then used to titrate 13.86 mL of a solution...
1. A 0.4187 g sample of a pure soluble chloride compound is dissolved in water, and all of the chloride ion is precipitated as AgCl by the addition of an excess of silver nitrate. The mass of the resulting AgCl is found to be 0.9536 g. What is the mass percentage of chlorine in the original compound? ________% 2. A student determines the calcium content of a solution by first precipitating it as calcium hydroxide, and then decomposing the hydroxide...
A solution made by dissolving 0.875 g of Co(NH3)4Cl3 in 20.2 g of water freezes at −0.690°C. Calculate the number of moles of ions produced when 1 mole of Co(NH3)4Cl3 is dissolved in water. mol
Be sure to answer all parts. A 0.9340 g sample of a mixture of NaCl and KCl is dissolved in water, and the solution is then treated with an excess of AgNO3 to yield 1.913 g of AgCl. Calculate the percent by mass of each compound in the mixture. % mass NaCl % mass KCl
Exercises (Mass Percent) 1. 3.0 grams of sugar are dissolved in 150 g of water What is the mass percent of sugar in the solution? 2. A 200-gram solution of alcohol contains 180 mL of water. What is the mass percent of alcohol? (Remember water's density.) 3. How many grams of NaBr are needed to make 50 g of a 5.0% solution? 4. How many grams of LiOH are needed to make 25 g of a 4.0% solution? 5. What...
14. A sample of Co(OH)2 is dissolved in water leaving some sample un-dissolved on the bottom. Calculate the solubility and the pH. Ksp - 5.92 x 10-15 Icon Col] ColoHz(3) Cot (ag) + 20th cug) ksy=[164] [OH-] 6 t 15. Will a precipitate form if 500 mL of 6.5 x 10- M AgNO3 is added to 500 mL of 6.8 x 10+ NaCl (Ksp of AgCl = 1.8 x 10-10)?
A 0.5711 g sample of a pure soluble chloride compound is dissolved in water, and all of the chloride ion is precipitated as AgCI by the addition of an excess of silver nitrate. The mass of the resulting AgCl is found to be 1.2913 g. What is the mass percentage of chlorine in the original compound? 9 more group attempts remaining Submit Answer Retry Entire Group