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Three students chemist measured 50.0 mL of 1.00 M NaOH in seperate styrofoam "coffee cups" calorimeters (Part B). Brett added 50.0mL of 1.10 M HCL to his solution of NaOH; Dale added 45.5mL of 1.10 M HCL (equal moles)to his NaOH solution. Lyndsay added 50.0 mL of 1.00 M HCL to her NaOH solution. Each student recorded the temperature change and calculated the enthalpy of neutralization. Two of the chemist will report, within experimental error, the same temperature change for the HCL/NaOH reaction. Identify the two students and explain.
Calculate the concentration of the dye in solution C in units of moles per Liter Kool Aid Solution, i have a molar absorptivity of 2.41x10^4 L/mol-cm analytical wavelength of 505nm molecular weight of 496.42g/mol, absorbance of 1.528
What is the heat of vaporization of a if 215mol of the liquid required 2040J of energy to vaporize at its boiling point
A solution is prepared by mixing 87.0 mL of 5.00 M HCl and 36.0 mL of 8.00 M HNO3. Water is then added until the final volume is 1.00 L. Calculate [H+ ], [OH - ], and the pH for this solution.
What mass of potassium chromate is needed to add to exactly 500g of water to produce a solution with vapor pressure of 21.50 torr at 24 C
You are required to prepare a review-type essay on Electrochemistry. Insert your completed review essay into a soft-bound cover with a clear plastic front.
Iron has a body-centered cubic unit cell, and a density of 7.87 g/cm3. Calculate the edge length of the unit cell, in pm.
if you have 430.00 ml of water at 25.00 degrees celcius.and add 100 ml of water at 95.00 degrees celcius, what is the final temperature of the mixture?
Aluminum reacts with excess hydrochloric acid to form aqueous aluminum chloride and 36.8 mL of hydrogen gas over water at 27°C and 764 mmHg. How many grams of aluminum reacted?
Calculate the feed ratio of adipic acid and hexamethylene diamine that should be employed to obtain a polyamide of approximately 15,000 molecular weight at 99.5% conversion.
To treat a thyroid tumor, a patient must be given a 170-mCi dose of iodine-131, supplied in a solution containing 41 mCi/mL. What volume of solution must be administered per dose?
Write the net ionic equation for the interaction of an ion with water. Explain why the salt solution is acidic, basic or neutral? NaC2H3O2 Na+ + H2O -> and C2H3O2 + H2O ->
How many grams of potassium chloride will be generated on decomposition of 225 grams of potassium chlorate?
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