During the phosphatase experiment you will use several different ph buffers. the ph value depends upon combing various ratios of 0.1m citric acid and 0.2m sodium phosphate dibasic (na2hpo4, m. w. = 142 g/mole). describe how you would make 300 ml of 0.2m sodium phosphate dibasic given a 500g bottle of na2hpo4. include the type and sizes of any measuring vessels that you use to make the solution.

Which answer lists the fundamental forces in order from strongest to weakest

What effect does a decrease in temperature have on the overall rate of a chemical reaction? a decrease in temperature decreases . the reaction rate will

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.