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Problem- Suppose that the microwave radiation has a wavelength of 12cmcm . How many photons are required to heat 305mL of coffee from 25.0C to 62.0 C? Assume that the coffee has the same density, 0.997g/mL , and specific heat capacity, 4.184 J/(g*K) , as water over this temperature range.
Express the number of photons numerically.
Problem- Carbon dioxide dissolves in water to form carbonic acid, which is primarily dissolved CO2. Dissolved CO2 satisfies the equilibrium equation
a) A solution of 1-iodohexane b) A solution of (S)-2-iodohexane c) A solution of 40% (S)-3-chlorohexane and 60% (R)-3-chlorohexane d) A solution of equal quantities of R and S 3-chlorohexane
Cyclohexane is utilized as the recrystallization solvent to purify the triphenylmethanol by removing the biphenyl impurity. Explain why it is better choice of solvent than a solvent such as isopropyl alcohol
While doing sn2 chemistry- synthesis of 1-bromobutane from butan-1-ol, why would the crude product likely contain organic impurities
Enter the symbol for the orbitals that overlap (example for H2 enter 1s) as well as the chemical symbol of the noble gas separated by a comma.
If you had a saturated solution of NaNO3 at 40 degrees Celsius that contained 85 grams of water, how much of the salt would you need to add to have a saturated solution at 70 degrees Celsius?
suppose the hydrate was heated too quickly and some of it was lost as it spattered out of the container . explain how this would effect .
Each mole of cyclohexene reacts with four moles of H2O2 to give adipic acid. You added about 3.6 grams of H2O2 to your reaction mixture (12 grams of a 30% solution were added). Calculate the mass of H2O2 required to react with 2.00g of cyclohexene..
Use Coulomb's law to calculate the ionization energy in kJ/mol of an atom composed of a proton and an electron separated by 272.00 pm.
A biochemist needs 750 mL of an acetic acid-sodium acetate buffer with pH = 4.50. Solid sodium acetate NaC2H3O2 and glacial acetic acid HC2H3O2 are available. Glacial acetic acid is 99% HCH3O2 by mass and has a density of 1.05 g/mL.
The pressure inside a hydrogen-filled container was 2.10 atm at 21 C . What would the pressure be if the container was heated to 85 C
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
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