One method used to store energy during times of low demand is by pumping water uphill into a reservoir. When energy demand exceeds the output produced by power plants, the water is released, moves downhill, and is converted into electricity by a turbine. During a 142.0 minute long period of low usage, 62.0 MW is used to pump water up an elevation of 56.7 m […]

Titration Lab-Finding Ka In this lab you will use an online titration simulation to determine the Ka of two hypothetical weak acids. Step 1: Plan your Lab Write out a purpose, procedure and materials list that you would need if you were going to complete this experiment in a conventional lab. Be sure to include safety considerations in your procedure! You will want to visit […]

Quizzes and Final Exam help Course Description:    This course stresses the conceptual and mathematical approach to understanding                                       general chemistry and prepares the student to follow a science oriented four-year                                       program. It provides students with the necessary tools to handle problems of both                                       a theoretical and practical nature. The students taking this course are usually                                       declared Chemistry, Physics, Engineering, Pre-Med, etc., majors. 

When 0.2235g of strontium reacted with 25.00mL of 1.168 M HCl, 63.18g of H20 (water) was displaced by the H2 gas produced. The temperature in the reaction flask was 27.0 degrees C and the barometric pressure was 777 Torr. The molar mass of strontium is 87.62g/mol. At 27.0 degrees C the vapor pressure of water is 27.0 Torr and its density is 0.9965g/mL. When the […]

You are the project manager of an environmental company that was hired to cleanup a historical arsenic contamination site. Soil sampling results indicated the area impacted with arsenic above action levels is 30 feet by 55 feet. The depth of the arsenic plume is three feet below ground surface. The land owner wanted to clean this site for future development. Using your textbook, answer the […]

Hey I need someone to create me a info-graphic thats related to the periodic table of elements.  I need someone who knows chemistry very well and knows a lot about the perodic table ( to be specific the element thallium. I need to create a info-graphic that includes the information from the pdf below. You should be able to complete everything the rubrics says and […]

Write the balanced chemical equation for the reaction taking place in the flasks for part 1.  From the mass of KHP, calculate the moles of KHP used for each of 3 trials.  Using the moles of KHP in each flask, use stoichiometry to calculate the moles of NaOH that were used to reach the equivalence point in each flask.  Finally, calculate the molarity of your […]

Write the balanced chemical equation for the reaction taking place in the flasks for part 1.  From the mass of KHP, calculate the moles of KHP used for each of 3 trials.  Using the moles of KHP in each flask, use stoichiometry to calculate the moles of NaOH that were used to reach the equivalence point in each flask.  Finally, calculate the molarity of your […]

Write the balanced chemical equation for the reaction taking place in the flasks for part 1.  From the mass of KHP, calculate the moles of KHP used for each of 3 trials.  Using the moles of KHP in each flask, use stoichiometry to calculate the moles of NaOH that were used to reach the equivalence point in each flask.  Finally, calculate the molarity of your […]

Write the balanced chemical equation for the reaction taking place in the flasks for part 1.  From the mass of KHP, calculate the moles of KHP used for each of 3 trials.  Using the moles of KHP in each flask, use stoichiometry to calculate the moles of NaOH that were used to reach the equivalence point in each flask.  Finally, calculate the molarity of your […]