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The blue color of the sky results from the scattering of sunlight by molecules in the air. The blue light has a frequency of about 7.5x10^14 Hz, what is the wavelength in nm associated with this radiation and what is the the energy in joules of a single photon associated with this frequency.
The drying oven, although thought to be set at 125°C, had an inside temperature of 84°C. How will this error affect the reported percent by mass of the limiting reactant in the salt mixture. too high, too low, or unaffected
If 405 mL of a gas at 66 degrees Celsius and 595 mm Hg weighs 1.495g, what is the molecular weight of the gas?
question at relatively high temperatures nitrogen and oxygen more readily form a compound according to n2g o2 lt-gt
A 0.1276-g sample of monprotic acid (Molar Mass = 1.10x 10^2) was dissolved in a 25.0 mL of water and titrated with .0633 M NaOH after 10. mL of base had been added, the pH was determined to be 5.67. What is the Ka for the acid
A blend of polyethylene and PVC contains 10 wt °/. PVC. What is the molecular percentage of PVC
In the carbonic acid equilibrum, what happened to the sized of the balloon upon addtion of more acid (HCl), and what happened to the sized of balloon upon addition of NaOH (Show the answer using equilibrum equation).
The density of an 40.0% w/w ethanol (C2H5OH) solution is 0.935 g/mL. What mass of ethanol does 225.0 mL of this solution contain
When a mixture of 12.5g of acetylene (C2H2) and 12.5g of oxygen (O2) is ignited, the resultant combustion reaction produces CO2 and H2O
What is the molarity of a sodium chloride solution if 2.45 grams of NaCl is dissolved in 250 mLs of water? C. How many grams of solute are in 1.75 Liters of 0.460 M sodium monohydrogen phosphate
The poison strychnine is a weakly basic compound with Kb = 1.8e-6. What is the pH of a 0.058M solution of strychnine
Discuss the importance of economics as it relates to pollution prevention. Supple at least two seperate examples to augment your discussion.
Carbon-14 decays by beta emission with a half life of 5,730 years. Assuming a particular object originally contained 6.5 micro grams of C-14 and now contains 0.76 micro grams of C-14, how old is the object
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