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Which color photons represent sunlight?
The balloon then drifted up into the Earth's atmosphere. Assuming the air pressure does not change, determine the volume of that helium balloon when it is 10km above Earth, where the atmospheric temperature is -53 degrees Celsius.
calculate the ph of an aques (buffered) solution with a volume of 400ml which contains 35.8 g of nh4cl, ammonium chloride, and 23.2 g of ammonia, nh3, (kb= 1.8x10^-5
Question- If the following two compounds are mixed, what would be the strongest IMF to exist between solvent and solute? Would these compounds be soluble in each other? You may find it helpful to draw dot-structures. COCl2 and CS2
What are the formal charges on all of the atoms in question 7. How many resonance structures are there
When you convert units, how do you decide which part of the conversion factor is in the numerator and which is in the denominator
Compute the atmospheric pressure at elevation 7500 ft considering the atmosphere as a static fluid. Presume standard atmosphere at sea level (14.70 psia). Also presume that air has a constant density. (g=0.07648 lb/ft3)
A solution of benzene (C6H6) and toluene (C7H8) is 25% benzene by mass. The vapor pressure of pure benzene and pure toluene at 25 oC are 94.2 torr and 28.4 torr, respectively. Assuming ideal behavior, calculate each of the following: • (i) The vapor ..
Sickle-cell anemia is caused by a genetic defect that substitutes valine for glutamic acid at one position in two of the four chains of the hemoglobin protein. The result is a decrease in the water solubility of hemoglobin.
How many grams of dry NH4Cl need to be added to 1.80 L of a 0.800 solution of ammonia, NH3, to prepare a buffer solution that has a Kb of 8.87? for ammonia is 1.8E-5.
If 8.0 moles of the gas A is palced in a 60.0 L tank with 1.0 moles of B at 0 degress celsius and 1 atm, they react according to this equation: 2A(g) + B(g) --> 3C(g) +D(g) How many moles are present in the tank when the reaction is complete
If 200. mg of fluorine-18 is shipped at 10:00 A.M., how many milligrams of the radioisotope are still active when the sample arrives at the radiology laboratory
Determine the center of mass coordinates for formaldyde, H2C=0. Start with a planar structure with C as the origin. The HCH angle is 120 degrees. The C-0 bond length 1.2 A, the C-H bond length is 1.0 A.
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