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If 36.6 grams of hydrogen sulfide gas (H2S; MM = 34.08 g/mol) react with 35.6 grams of oxygen gas (O2, MM = 32.00 g/mol), what is the mass of sulfur dioxide (SO2, MM = 64.06 g/mol) gas produced
a certain element has only two naturally occurring isotopes one with 18 neutrons and the other with 20 neutrons. the element forms 1 charged ions when in ionic compounds. predict the identity of the
Assign the lines in the UV photoelectron spectrum of CO shown below and predict the appearance of the UV photoelectron spectrum of the SO molecule.
The mass of the carbon dioxide was 30.50 g, and the mass of the water was 14.98 g. What was the empirical formula of the hydrocarbon
What monatomic ions do selenium (Z = 34) and cesium (Z = 55) form? (Type your answer using the format [Cu]+ for Cu+ and [Cu]2+ for Cu2+.)
When a He atom absorbs a photon to form the excited configuration 1s^1 2s^1 (here called He*) a weak bond forms with another He to form the diatomic molecule HeHe*. Construct a molecular orbital des
Identify the elements that correspond to the following atomic numbers. label each as a noble gas ? a halogen ?an alkali metal? an alkaline earth metal? a transition metal? a lanthanide metal? or an
If 38.6 grams of hydrogen sulfide gas (H2S; MM = 34.08 g/mol) react with 36.3 grams of oxygen gas (O2, MM = 32.00 g/mol), what is the mass of sulfur dioxide (SO2, MM = 64.06 g/mol) gas produced
The following minerals contain silver. Rank the minerals in order of percent silver from least to greatest: miersite, AgI; hessite, Ag2Te; empressite, AgTe; and cerargyite, AgCl.
estimate the enthalpy of vaporization of water 100 degree celcius from its value at 25 degree celcius (+44.01 kJ mol^-1) given the constant pressure heat capacities of 75.29 kJ^-1mol-1 and 33.55 kJ-
You have been given the task by your adviser of making a 1-L of a solution with a calcium activity {Ca2+} of 1.3*10^-4 M and he wants you to make two different ways. One in 0.05M KCl and the second
If there are 0.640 g of NaCl left in a beaker that originally contained 75.0 mL of saltwater, what must have been the molar concentration of the original solution? The molar mass of NaCl is 58.44 g/
Give the systematic names for the formulas, or the formulas for the names. (Type your answer using the format copper(II) chloride for CuCl2, and using the format CO2 for CO2. Omit the centered dot f
If you have 4.63 g of caffeine dissolved in 69.9 mL of water and the extraction coefficient between H2O and CH2Cl2 is 21.51. How many grams of caffeine will extract into the CH22Cl2 layer if you use
Suppose scheme one involves the reaction of the Grignard reagent containing more carbon atoms with the carbonyl compound containing less carbon atoms and scheme two involves the reaction of the Grig
One chemistry 370 student was attempting to synthesize ethyl t-butyl ether by a William ether synthesis with sodium ethoxide and t-butyl bromide. To his surprise, the major product he obtained is NO
1,3-Butadiene can react with NBS (conditions generating Br2), producing 1,2 and 1,4- addition products. At different reaction temperature, the ratio of the two products is different. (a) Write the r
The ternary compounds called chlorofluorocarbons, or Freons, have proved to be very valuable as refrigerants and as cleaning agents for circuit boards. Unfortunately, in the atmosphere these compoun
Write a balanced reaction for the complete combustion of ethanol (C2H5OH) in oxygen, using the smallest integer coefficients. Then add up the total of all of the coefficients from both sides of your
Balance the following equation, using the smallest possible integer coefficients. Then enter the 4 coefficients in the 4 answer boxes. (Suppose the coefficients were 6, 5, 4 and 3 for the 4 substanc
Suppose a fluorine- nuclide transforms into an oxygen- nuclide by absorbing an electron and emitting a gamma ray
If a pickle recipe requires 2.0 cups of vinegar to make 6 pints of pickles, how much vinegar do you need to make 25.00 gallons of these pickles
What is the density of gold if a ring with a volume of 2.656 cubic centimeters has a mass of 51.26 grams?
If you are given a thermometer with 10 divisions between 10.1 and 10.2 degrees Celsius, and room temperature is exactly 22 degrees Celsius how should you report that value