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When Voyager 2 encountered the planet Saturn in 1981, the planet was approximately 1 billion miles (1 X 109 mi) from the Earth. How long did it take for the television picture signal to reach the Earth from Saturn?
calculate the molar mass of an unknown compound based on the following data. a mixture containing 1.11g of the unknown
Calculate partition coefficient of caffeine between water and each of two organic solvents. (c) Can you use diethyl ether to extract caffeine from water? Why/why not.
Your answer is correct. What is the overall order of the reaction. First order none of these fourth order third order second order Correct- Your answer is correct. What is the value of the rate constant for the reaction
A gaseous mixture containing 0.200 mol fraction of carbon tetrachloride (CCl4) and 0.800 mol fraction of dry air is initially at 73.0 °C and 1029 mmHg. what temperature does the CCl4 first start to condense
Problem- draw all the molecular orbital diagrams for butadiene (c4h6) and order them from lowest energy to highest energy
a 45.5g sample of copper at 99.8 celsius is dropped into a beaker containing 151 g of water at 18.5 celsius. what is
Problem- Place each charge form of alanine under the pH condition where it would be the predominant form. The pKa values for the carboxyl group and amino group of alanine are approximately 2.3 and 9.7, respectively.
A local jeweler purchased large amounts of pure silver because he and his staff wanted to design a new line of Silver jewlery a process which requires the melting and molding of silver into a varieyt of designs
Calculate the radiation dosage (in grays) for an 57-kg person that is exposed for 3.0 seconds to a 3.0 Ci source of beta radiation.
Natural K consists of 2 stable isotopes 39K(93.10%) and 41K(6.88%) and one radioactive isotope 40K (0.0118%, t1/2 = 1.27x109 years).
Main group elements often attain a filled outer level (either eight electrons or two) by forming ions with the electron configuration of the nearest noble gas
170mL of an HCl solution with pH of 2.80 is added to 200mL of an HNO3 solution. The resulting pH is 1.40. What was the pH of the original HNO3 solution
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