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A radioactive sample contains 2.50g of an isotope with a half-life of 3.8 days. How much of the isotope in grams will remain after 14.2 days?
How much entropy does this produce per hour in the surroundings at 25.4 °C? Assume the heat transfer is reversible.
a TIre has a volume of 535 cm3 at a temprature of 20 c while in use the temprature of the tire rises to 65 c calculet the new volume of the tire assuming a constant pressure and amount of air?
An equilibrium mixture contains 0.750 mol of each of the products (carbon dioxide and hydrogen gas) and 0.200 mol of each of the reactants (carbon monoxide and water vapor) in a 1.00-L container.
The solubility of AgCl(s) in water at 25 degrees celsius is 1.33x10^-5 mol/L and its change in enthalpy of solution is 65.7 kJ/mol
a 93 L sample of dry air cools from 145 degrees C to -22 degrees C while the pressure is maintained at 2.85 atm. what is the final pressure?
Give the products (if any) expected from the treatment of each of the following compounds with ozone followed by dimethyl sulfide.
Hardness in groundwater is due to the presence of metal ions, primarily Mg2 and Ca2 . Hardness is generally reported as ppm CaCO3 or mmol/L Ca2 . To measure water hardness, a sample of groundwater is titrated with EDTA,
A gas filled balloon having a volume of 2.50L at 1.2atm and 25 degrees celsius is allowed o rise to the stratosphere where the temperature and pressure are -23 degrees celsius and 3.00x10^3 atm respectively,. Calculate the final volume of the ball..
Consider a system with four energy levels: 0E, 1E, 2E, 3E, where E is kT (E can be represented by epsilon and T is 100K). Assume that there are 10 particles. Provide an expression for energy, heat capacity and entropy. Plot all as a function of T
If glass beads in the lab were replaced by a material with less surface area, will liquid seperation be better or worse. Why. Why should the recieveing flask be submersed under an ice bath when collecting isopropanol or acetone
what will be the final temperature of the system when thermal equilibrium is attained
Calculate the resulting concentration of triiodide ions in the acidified solution.
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