Apiston and cylinder mechanism contains 5 moles of an ideal gas. the gas expands reversibly and isothermally from a pressure of 1 bar and a temperature of 400 k to a pressure of 2 bar. calculate: a) the expansion work, b) the heat transferred.

What volume of a 2.00 m stock solution of naoh is needed to prepare 150. ml of 0.40 m solution?

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.

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.