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Hydrogen sulfide is composed of two elements: hydrogen and sulfur. In an experiment, 6.500 g of hydrogen sulfide is fully decomposed into its elements.A) if 0.384g of hydrogen is obtained in this experiment, how many grams of sulfur must be obtainedB) What fundamental law does this experiment demonstrate?C) How is this law explained by Dalton's atomic theory?
Determine the empirical and molecular formulas of each of the following substances:a) Ibuprofen has 75.69% C, 8.80%H and 15.51%O by mass and has a molar mass about 206g/molb) Cadaverine has 58.55%C, 13.81%H and 27.40%N by mass, its molar mass is 102.2g/molc) Epi has 59.0%C, 7.1%H, 26.2%0 and 7.7%N by mass; its MW is about 180 amu.
When a mixture of 10.0g of acetylene(C2H2) and 10g of oxygen (O2) is ignited, the resultant combustion reaction produces CO2 and H20.A) write a balanced chemical equation for this reactionB)Which is the limiting reactant?C)How many grams of C2h2, o2, co2 and H2o are present after the reaction is complete?
A reverse osmosis plant desalinates 5x10^6 L/day of feedwater containing 1500mg/L of salts yielding 3x10^6 L/day of product water with 75 mg/L of salt. What would the salt concentration be in the brine?
Determine which girl has the solutions at the concentrations desired and Girl A dilutes 10 mL stock solution to a final volume of 20 mL. Girl B dilutes 10 mL stock solution to a final volume of 40 mL.
Determine how many grams of aluminum hydroxide will get from 18.2g of aluminum sulfide and determine the density of this newly minted penny
What is the order of the reaction if it takes 10 minutes, 20 minutes, 30 minutes to reach 75% conversion?
The average pH of precipitation in rural areas is 5.80. Assuming that the pH is controlled by the carbonate system, i.e., no anthropogenic acid gases are present in the atmosphere.
Find out How many grams of gasoline will fill a 12.5gal tank if a particular brand of gasoline has the density of 0.737 g/mL at the temperature of 25 degree Celsius?
Calculate the specific heat was? Would your computed specific heat be , too low, too high or not affected if you had not dried the metal before placing it into the Styrofoam cup. Explain your answer?
Understanding of chemistry basics - which of the following is not changed by the activity of an enzyme during a chemical reaction?
Determine how many moles each of Na+ and Cl- are in 0.700 L of the saline solution (A physiological saline solution contains 167 mEq/L each of Na+ and Cl-.)?
What mass of sucrose C 12 H 22 O 11 must be mixed with 543 grams of H 2 O to make a solution with an osmotic pressure =8.00 atm at the temperature of 12 degree celsius?
Determine how many atoms there are in 1 gallon using your knowledge of mole calculations and unit conversions. Assume that the molecular formula for gasoline = C6H14 ,the density of gasoline =0.85 grams/mL
Determine the change in Ssys for the process if specific heat capacity for ethanol = 2.42 J/g K. express your answer in units of J/K
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