Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
In order to create an engineered human hemoglobin molecule that had the same bicarbonate binding properties as crocodile hemoglobin.
Other animals have similarly adapted to using small molecules as allosteric effectors to encourage hemoglobin to release its oxygen. Whereas humans use 2,3-BPG and crocodiles use HCO3-, birds use m
After the reaction is complete, the excess MnO2 is collected by filtration, washed, allowed to dry, and is then weighed; 0.3521g are recovered.
A TLC plate showed two spots with Rf values of 0.25 and 0.26. The plate was removed from the developing chamber, the residual solvent was allowed to evaporate from the plate, and then the plate was
In a chemcial analysis of a chromium alloy, all of the chromium is first converted to chromate ions. a 50ml sample of chromate ion solution is then reduced in a basic solution to chromium (lll) hydr
A 10.0 g piece of metal at 100 Degrees Celcius is transferred to a calorimeter containing 50.0 mL of water intially at 23.0 Degrees Celcius. Calculate the specific heat capacity of the metal if the
A student placed a mixture of BaO and CaO in a 1.46 L flask containing carbon dioxide gas at 35.0 degrees celsius and 746 mmHg. After the reactions were complete, she found that the CO2 pressure had
In an adiabatic bomb calorimeter, oxidation of 0.4362g of naphthalene(C10H8) caused a temperature rise of 1.707 degree celsius. The final temperature was 298.15K.
How many liters of gaseous hydrogen bromide at 27 degrees Celsius and 0.965 atm will a chemist need if she wishes to prepare 3.5L of 1.2 M hydrobromic acid?
If our eyes could see a slightly wider region of the electromagnetic spectrum, we would see a fifth line in the Balmer series emission spectrum.
Water flows into the center of a porous material and then flows through the other side. (The center of the material is cylindrical in nature). Assuming the output rate of flow is double the input r
Many acid-catalyzed reactions begin with the protonation of the reactant. Draw the electron flow arrow(s) in the following reaction mechanism that shows this process.
1450 mmHg and 286k, a skin diver exhales a 207ml bubble of air that si 77% N2, 17% O2,6% CO2 by volume.How many mole of N2 are in the bubble?
A sample of water contaminated with radionuclides showed an activity of 12,436 counts per second at time of sampling and 8966 counts per second exactly 30 days later. What is the half-life of the r
Kendrew were awarded the Nobel Prize for their discovery of the structure of hemoglobin, a very large molecule that transports oxygen from the lungs to cells through the bloodstream.
When light of frequency 5.26×1015 s-1 shines on the surface of a metal, electrons are ejected with a maximum kinetic energy of 2.68×10-19 J.
A small bubble rises from the bottom of a lake, where the temperature and pressure are 4oC and 3.0 atm, to the water's surface, where the temperature is 25oC and pressure is 0.95 atm.
The complete combustion of salicylic acid releases 21.90 kJ of energy per gram of salicylic acid. In a particular bomb calorimeter (initially at room temperature), the combustion of 0.1288 g of sali
Suppose you have a solution that might contain any or all of the following cations: Cu2+, Ag+, Ba2+ and Mn2+. Addtion of HCl causes a precipitate to form. After the precipitate is filtered off, H2SO
Marble chips (calcium carbonate, CaCO3) react with hydrochloric acid, HCl, to produce calcium chloride, CaCl2, water and carbon dioxide according to the following reaction: CaCO3 + 2 HCl CaCl2 + H2
'Natural gas' can be represented by CH4 (methane) and "gasoline" can be represented by C8H18 (octane). Write the chemical formulas for the combustion of methane and octane.
How many liters of hydrogen gas is formed from the complete reaction of 18.9 g C? Assume that the hydrogen gas is collected at a pressure of 1.0 atm and a temperature of 350 K.
Calculate change in Gibbs free energy for the reaction CO(g) +1/2O2(g)-CO2(g) at 298.15 K. Calculate Change in Gibbs free energy reaction at 650 K assuming that enthalpy change in reaction is consta
Suppose that 0.100atm each of the gases CO,H2,CO2 and H2O is placed in a container and allowed to come to equilibrium. Calculate the equilibrium pressure of all gases. (Kp=1.85) for the reaction CO(
A student carried out a simple distillation of toluene for purification. Gas Chromatography analysis indicated the obtained fraction was 100% pure.