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Some velomobile seats have been designed to hold ice packs inside their cushions. If you started a ride with ice packs that held 1700 g of frozen water at 0 degrees C , and the temperature of the water at the end of the ride was 32 degrees C , how many calories of heat energy were absorbed?
When 0.069 mol of aluminum sulfate are dissolved in enough water to make 485 milliliters of solution, what is the molar concentration of aluminum ions?
Suppose a piece of silver jewlery contains 5.00 * 10^22 of silver. how many dozens of silver atoms are in the piece of jewlery.
A student mixes 347 mL of water and 254 mL of 8.70 x 10-5 M greenfood dye solution. What is the concentration of this new dilute solution of green food dye?
Calculate the equilibrium concentration of each substance in the reaction. b.) Calculate the equilibrium constant for the reaction.
What volume of STP of CO2 would be produced by the fermentation of 13.94 of 13.94g of glucose?
The room temperature and pressure were 23.6 deg C and 763.4 mm Hg respectively. The residue had a mass of 3.1915 grams. What was the partial pressure of oxygen?
Using a sample that was dissolved in CH 2 Cl 2 , mixed alumina, evaporated the CH 2 C l2 , loaded and began to run his column, starting with C 6 H 14
A proton in a linear accelerator has a de Broglie wavelength of 139 pm what is the speed of the proton?
Determine the partial pressure. Calculate the total pressure and volume in liters at STP of Nitrogen, Helium and Neon mixture.
How many kilograms of sodium fluoride would be needed to treat an 8.25x10^7 gal reservior?
Is 1-propanol soluble in hexane? Why or why not? What is the sketched formula for ethyl methyl ester and is it an isomer of butanoic acid? If not, what is the isomer of butanoic acid?
Calculate the pH during the titration of 30.00 mL of 0.1000 M NaOH with 0.1000 M HCl after 30.31 mL of the acid
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