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What were two significant differences between the spectra of curcumin and tetrahydrocurcumin?
When a 5.60 g sample of solid sodium hydroxide dissolves in 100.0 g of water in a coffee-cup calorimeter, the temperature rises from 22.3 degrees Celsius to 41.6 degrees Celcius.
The human body obtains 1078 kJ from a candy bar. If this energy were used to vaporize water at 100°C, how much water in liters could be vaporized?
The specific heat of liquid water is 4.184 J/g. degree C. Calculate the energy required to heat 10.0 g of water from 26.5 degree C to 83.7 degree C.
Discuss how precise and accurate measurement can be achieved in spite of the inherent measurement uncertainty. Take a ruler and measure the height of the textbook three times. Record the three measurements, and discuss the uncertainty in your meas..
pure nitrogen can be prepared when an aqueous solution of ammonium nitrite decomposes to form water vapor and nitrogen
After the reaction occurs and the temperature returns to 22°C, what is the pressure inside the flask? (Neglect the volume of the solid product.)
You mix 1.0 mL of 0.50 M Cu(NO3)2 with 6.0 mL of 0.05 M KI, and collect the dry CuI precipitate. What mass of CuI do you expect to obtain from this reaction
what will be the concentration of dichlobenil in the pond? The following conversion factors will be helpful: 1 acre=43,560ft2 1ft=12in 1in=2.54cm 1cm3=1mL 1ft3=28,317cm3
When she introduced 3.63E-2 moles of N2(g) and 6.18E-2 moles of H2(g) into a 1.00 Liter container, she found the equilibrium concentration of NH3(g) to be 9.68E-4 M.
In its crystalline form, hemoglobin has a spherical shape with a radius of 2.75 nm. In aqueous solution, the hydrated radius of hemoglobin is found to be 3.55 nm. How many water molecules hydrate a hemoglobin molecule
During a heart attack, blood flowing to the heart muscle is interrupted by blockage of a coronary artery. How would you expect the metabolism in the heart to change
The spectroscopic data of diatomic iodine shows a vibrational frequency of 214.5 cm-1, rotational constant of 0.03737 cm-1, and D0 of 12,440 cm-1. If the enthalpy of reaction is 153.97 KJ, Does this value make sense based on the spectroscopic data..
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