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The dissolution of ammonium nitrate, NH4NO3, in water is an endothermic process. Since the calorimeter is not a perfect insulator, will the enthalpy of solution for ammonium nitrate be reported as too high or too low if this heat change is ignored? Explain
A volume of 60.0mL of aqueous potassium hydroxide (KOH) was titrated against a standard solution of sulfuric acid (H2SO4). What was the molarity of the KOH solution if 24.7mL of 1.50 M H2SO4 was needed?
if you burn 51.8 g of hydrogen and produce 463g of water, how much oxygen reacted?
As a result, the pressure inside the vessel drops to 30.64 atm at 25 C. Calculate the final percent by mass of ozone in the vessel.
How much energy (heat) is released when 1.52 moles of H2 reacts with 0.68 moles of Cl2 to create HCl(g) if the ΔHrxn = -184.6 kJ.
Derive an expression for the instantaneous temperature as a function of the instantaneous pressure, and use it to sketch T/Ti vs P/Pi.
A weather balloon at launch is partially inflated with 3.00 times 10 power 4l of helium at STP. what will be the volume of helium at an altitude of 7km, where the pressure is 0.41atm and the temperature is -20 degrees Celsius?
Find the velocity of an electron emitted by a metal whose threshold frequency is 2.47 x 10^14 s^-1 when it is exposed to visible light of wavelength 5.02 x 10^-7 m
A 2 cm string is fastened at both sides is plucked. What is the wavelength of the n = 4 standing wave? How many nodes does it contain?
3.24 x 10-3 g of a protein was dissolved in water (total vol. of 5.00 mL). Given the osmotic pressure of the solution was 1.50 x 10-3 atm and the temperature is 298.0K, calculate the molar mass of the protein.
given that the density of elemental mercury is 13.534g/mL, how many atoms of mercury are contained in 1.500mL of element?
How many moles of NaOH should be added to a solution containing 0.440 moles of formic acid, HCOOH, to prepare a formic acid/formate
how to calculate chemicals ions and determain the calculations once it becomes a compound chemical
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