1) If the pressure on 56 mL vol. of a confined gas is increased from 720 mmHg to 760 mmHg while temperature increased from 25°C to 35°C. What is the final volume? 2) Using the ideal gas law to calculate the mol of a gas at -26°C and .09 atm with a volume of 23mL 3) Define colligative properties and list four (4) of them: 4) In Ex: 12 there was a reaction between sulfamic acid and sodium nitrite which produced nitrogen, water and sodium bisulfate. (sulfamic acid is H2NSO3H(s) ) (A) Give the formula of the reactants (B) Write the complete reaction 5) The volume for the ideal perfect gas been determineto be 22.4133 L. Show how this value was calculated. 6) In the lab what does it mean when there is no water flowing from the Florence flask to the beaker and the entire solid has reacted? 7) True or False: In Ex: 12 we could calculate the number of moles that where collected because one mole of nitrogen gas is produced for every mole of sulfamic acid. 8) When a solute is add to a pure solvent, what effects does the solute have on freezing and boiling point of the solution? 9) What are the similarities between Boyle’s Law and Charles’s Law? 10) In Experiment # 13. (A) Why is Naphthalene used in this experiment instead of water? (B) Draw a graph to depict the freezing point depression of pure Naphthalene 11). What is the mathematical equation of the rate equation expressed as? 12) What is the mathematical equation for the average rate of a reaction? 13) What is the expected freezing point of a solution that contains 25.0 g of fructose, C6H12O6, in 250.0 g of water? ( 1 mol C6H12O6 = 180 g, and Kf = 1.86oCm-1) 14) Ten moles of hydrogen gas at 0oC are forced into a cylinder with a volume of 300 mL. What is the pressure of the gas inside the cylinder, in atmosphere? 15) Identify the following laboratory equipment, as (Place the alphabet by the number on the following sheet.) (1 – 20) a. watch glass b. test tube clamp c. ring stand d. beaker e. graduated cylinder f. buret g. Erlenmeyer flask h. Clay triangle i. Graduated pipet j. Test tube k. Florence flask l. Buret clamp m. Spatula n. Utility clamp o. Pinch clamp p. Wash bottle q. Funnel r. Medicine dropper s. Volumetric pipet t. Crucible tongs
Write and balance the equation for the reaction between nitric acid and potassium iodide. The products are potassium nitrate, iodine, nitrogen monoxide, and water.
Copper used in electric wires comes in two flavors (isotopes): 63Cu and 65Cu. 63Cu has an atomic mass of 62.9298 amu and an abundance of 69.09%. The other isotope, 65Cu, has an abundance of 30.91%. The average atomic mass between these two isotopes is 63.546 amu. Calculate the actual atomic mass of 65Cu. (Your answer should have 4 places after the decimal.)
Chemistry Essay on Nuclear Power High school level, but please write professionally. MLA format!!! NO PLAGIARISM, NO EXCEPTIONS!!!! READ INSTRUCTIONS CAREFULLY, FOLLOW RUBRIC CAREFULLY, AND LOOK AT THE RIGHT SCORING GUIDELINES ( 11.04 Writing Assignment) EVERYTHING IS ATTACHED!!! MAKE SURE YOU FOLLOW THE 11.04 Writing Assignment scoring guidelines!!! MLA FORMAT EVERYTHING CITED CORRECTLY, GOOD SPACING.
Ensure that the title for an article on the antioxidant effects of blueberries is specific, complete, concise, and unambiguous. The title should convey the following facts: ? Blueberries have an antioxidant effect ? Eating blueberries increases plasma antioxidant capacity ? If milk/milk protein is digested together with blueberries, no increase in plasma antioxidant capacity is observed
A 2.545g sample contains carbon, hydrogen and oxygen. It is subjected to carbon-hydrogen analysis and 3.703g of CO2 and 1.514g of H2O are collected. Calculate the mass od carbon and hydrogen sample.
