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An empty cast-iron pot that has a mass of 2.10 lb and is filled with 1.85 L of water. Calculate (a) the energy in joules required to heat the water from 23.0 degrees to 90.0 degrees celsius, and (b) the energy in joules required to heat the pot from 23.0 degree to 90.0 degree celsius. (c) Which article, pot or water, absorbs more heat during the change? (d) How many total joules of energy are absorbed by the pot and the water during the process?
Nicotine, a component of tobacco, is composed of C, H, and N. A 12.075 mg sample of nicotine was combusted, producing 32.757 mg of CO2 and 9.391 mg of H2O. What is the empirical formula for nicotine?
Determine the volume of 0.215M KOH solution required to neutralize each of the following samples of sulfuric acid. The neutralization reaction is: H2SO4(aq)+2KOH(aq)?K2SO4(aq)+2H2O(l)
If a solution of sodium chloride contains 5.2 NaCl in 900 grams of water. What is the concentration of the solution in parts per million?
A reaction rate has a constant of 1.28/mol*s at 433 degress C and 24.0/mol*s at 533 degrees C. Determine the activation energy for this reaction.
calculate the number of grams of isopropyl alcohol rubbing alcohol c3h8o which must be added to 275 g of water to
suppose that a fully charged lead-acid battery contains 1.50 l of 5.00 m h2so4. what will be the concentration of h2so4
For each of the following three questions 25.0 mL of 0.100 M pyridine (Kb = 1.70 x 10-9) is titrated with 0.100 M HCl. For each question calculate the pH of the final solution after the indicated amount of HCl has been added. That is, treat each q..
If the average human body discharges 925.0g CO2 per day, how many moles of NaOH are needed each day for each person in the spacecraft
Beaker B contains 100.0g water heated to 20C.The contents of the two are mixed. What is the final temperature of contents? Assume no heat as lost.
Pretend you run a reaction and your theoretical yield is 5.25 grams,but you only isolate 4.25 grams. What is your percent yield. use one decimal place
The minimum frequency of light needed to eject electrons from a metal is called the threshold and find the minimum energy needed to eject electrons from a metal with a threshold frequency of 3.27*10^14s^-1.
calculate the number of moles of agcro4ksp9.0x1012 that will dissolve in 1.00l of 0.010 m k2cro4 solution. what will be
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