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A particular measuring device can detect radiation bursts with frequencies up to about 3.6 x 10^19 Hz. What is the wavelength of this radiation? The speed of light in a vacuum is 2.998 x 10^8 m/s.
Heavy water has a formula D2O, and semi-deuterated water has the formula DHO, where D stands for deuterium. Using the data below, etimate the percentages of D2o and DHO present in natural water
0.4768 g of oxalic acid dihydrate (H2C2O4 • 2H2O) was weighed out and titrated with sodium hydroxide (NaOH) according to the procedure in the handout. Vi was recorded from the buret as 5.91 mL. Vf was recorded from the buret as 42.28 mL. Calculate..
Which of the following factors affect the resolution (separation) of two compounds: (A) nature of the stationary phase; (B) eluent composition; (C) amount of sorbent used; (D) color of compounds bein separated?
the methanol was evaporated and the experiment was completed. The melting point of the aspirin was found to be 110-115 degrees Celcius. Explain why the melting point was low and why the melting range was so wide.
What is the molarity of the stock solution of luminol? What volume of the stock solution (Part A) would contain the number of moles present in the diluted solution (Part B)?
28.0mL of 0.250M HNO3 + 53.0mL of 0.320M KOH, What is the concentration of H+ or OH- ions in excess after the reaction goes to completion
While 2289 J of heat energy is added to 46.9 g of ethanol, C2H6O the temperature raises by 19.9 °C. Compute the molar heat capacity of C2H6O.
a 25 ml sample containing cu2 gave an instrumentsignal of 23.6 units corrected for a blank. when exactly 0.5 mlof
Find out the density of sulfur trifluoride gas at room temperature and 1 atmosphere pressure. 1. 0.0022 grams/cm3 2. 0.0057 grams/cm3 3. 0.0031 grams/cm3 4. 0.0065 grams/cm3 5. 0.0036 grams/cm3
Compute the morality of the excess reagent in 8.0mL of 0.10M FeCl3 in 0.02M HCl + 4.0mL of 0.010M K4[Fe(CN)6].
you have a mixture of oxalic acidh2c2o4 and another solid thatdoes not react with sodium hydroxide. if 29.58ml of
A sample of oxygen is collected over water at a total pressure of 690.7 mmHg at 19°C. The vapor pressure of water at 19°C is 16.5 mmHg. What is the partial pressure of O2
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