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Microwave ovens emit microwave energy with a wavelength of 12.0 cm. What is the energy of exactly one photon of this microwave radiation
a large containerized planting that contains 79kg of soil. An analysis shows that you need to neutral 3.27 meq/100gof acidity. How much of finely ground pure CaCO3
Calculate how much energy in the form of heat is available from 100mL of this mixture and compare it with the amount from pure gasoline. assume the densities of ethanol and gasoline are
Find the pH at the equivalence point(s) and the volume (mL) of 0.125M HCL needed to reach the point(s) in titrations
A solution is prepared by dissolving 11.5 g ammonium sulfate in enough water to make 100.0 mL of stock solution. A 10.00 mL sample of this stock solution is added to 52.00 mL of water. Calculate the concentration of ammonium ions and sulfate ions ..
What is the heat of reaction (kJ) per mole of acid? Assume the mixture has a specific heat capacity of 4.18 J/(g·K) and that the densities of the reactant solutions are both 1.00 g/mL.
A 0.4512 g sample of a primary-standard-grade Na2CO3 required 36.44 ml of a H2SO4 solution to reach the end point of the reaction.
When 350.0 mL of 0.45 M benzoic acid is titrated with 0.15 M NaOH, what is the pH of the solution after 200.0 mL of base has been added? The pKa for benzoic acid is 4.19
An equilibrium mixture of this reaction at a certain temperature was found to have [NH3]= 0.270M and [H2S]= 0.360M. What is the value of the equilibrium constant (Kc) at this temperature?
Do the following planes all belong to the same zone: (-1 1 0), (-3 1 1), (-1 -3 2)? If so, what is the zone axis?
A coffee-cup calorimeter contains 150.0g of water at 25.1C. A 121g block of copper metal is heated to 100.4C by putting it in a beaker of boiling water.
If 60.0g of Cu metal at 85C were added to 60.0g ethanol at 10C in a calorimeter of heat capacity 30.0 J/K what would the final temperature be assuming no heat losses? cp for Cu= 0.380 J/K/g and Cp for ethanol = 60.0 J/K/mol
Sulfur is used to crosslink isoprene (C5H8) units in naturally occurring rubber to make vulcanized rubber, which is a harder material. If it takes 4 sulfur atoms to form a crosslink with 1 isoprene unit
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