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A specific heat of gold is .129J/g deg. Celsius. What is the molar heat capacity of gold?
A 7 mL sample of a solution of K2CO3 was diluted with water to 25 mL. A 10 mL sample of the dilute solution was found to contain 0.61 M CO32-. What was the concentration of K2CO3 in the original undiluted solution
The ion-accelerating voltage in a particular quadrupole mass spectrometer is 5.00 V. How long will it take a singly charged cyclohexane ion to travel the 15.0 cm length of the rod
a solution is prepared by adding 30.0ml of 0.060m hbr to 130.0ml of 0.40m hi. calculate the concentrations of all
How many milliliters of boiling water are required to dissolve 25g of phthalic acid? If the solution were cooled to 14oC, how many grams of phthalic acid would you recrystallize out?
Glycophorin A is a 131 residue integral membrane protein that contains a single transmembrane alpha helix. If the lipid bilayer has a thickness of 30 A, calculate the number of residues of an alpha helix
An emerald gemstone is an impure form of the mineral beryl, Be3Al2Si16O18. What is the percentage of silicon in the mineral
The minimum energy needed to eject an electron from a sodium atom is 4.41 * 10^-19 J What is the maximum wavelength of light, in nanometers, that will show a photoelectric effect with sodium
The density of mercury (Hg, a liquid metal) is 13.6 g/mL. What volume would 305.4 grams of mercury occupy
Assume a wind turbine with a hub 50 meters above the ground, a rotor diameter of 75 meters and a wind-conversion efficiency of 25 percent.
A pure gas sample at room temperature (25 C) has an average molecular speed of 682 m/s. What is the identity of the gas.
A fixed quantity of gas at 24 degrees celcius exhibits pressure of 735 torr and occupies a volume of 4.38 l. A. Use boyles law to calculate the volume the gas will occupy if the pressure is increased to 1.89 atm while the temperature is held consta..
The d-d transition in [Ti(H2O)6]+3(aq) produces an absorption maximum at 500 nm. What is the magnitude of ? for this complex in kJ/mol? HINT: E = h ? and c = ? ? Enter your answer using 3 significant figures.
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