A100.0 ml sample of a 0.200 m aqueous solution of k2cro4 was added to 100.0 ml of a 0.100 m aqueous solution of bacl2. the mixture was stirred and the precipitate was collected, dried carefully, and weighed. how many grams of precipitate should be obtained? the reaction is shown below: k2cro4(aq) + bacl2(aq) ď‚® bacro4(s) + 2 kcl(aq) a. 2.05 g b. 2.53 g c. 5.07 g d. 6.16 g e. 7.60 g

150.0 grams of asf3 were reacted with 180.0 g of ccl4 to produce ascl3 and ccl2f2. if the actual yield of ccl2f2 was 127 g, what is the percent yield?

7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation. 8. when a 2.5 mol of sugar (c12h22o11) are added to a certain amount of water the boiling point is raised by 1 celsius degree. if 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? show all calculations leading to your answer or use 3 – 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100⁰c, how much steam at 100⁰c is produced? show all calculations leading to an answer. 10. the freezing of water at 0⁰c can be represented as follows: h2o (l) ↔ h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 – 4 sentences explain why applying pressure causes ice to melt.

What is the molar mass of a gas that has density of 2.054 g/l