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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?
Calculate the ratio of HCL molecules in the first excited rotational state to those in the ground state @ 25 C. Assume an equilibrium bond distance of 1.275 angstroms.
A solution containing 10.mmol of CO3^-2 and 5.0 mmol. Of HCO3- is titrated with 1.0M HCL What total volume of HCL must be added to reach the second equivalence point?
Find the rate of the reaction - What is the rate of the reaction?
Determine how many moles of SO 3 are formed if 12.24 moles of O 2 react with excess SO 2 ,? use the balance equation given as 2SO 2 (g)+O 2 (g)----> 2SO 3 (g)
The density of air at ordinary atmospheric pressure and 25 0C is 1.19 g/L. What is the mass of air, in kg, in a room that measures 12.5 ft by 15.5 ft by 8.0 ft?
Calculate the Root Mean Square Speed and its average kinetic energy per molecule of Nitrogen and water vapor
Compute the number of moles - As we know many volatile substances are present in Earth's atmosphere in trace amounts.
Estimate the ratios of the basic and acidic forms of the histidine side chain
Draw the enantiomer of proline which would give rise to the absolute stereochemistry and draw a proposed catalytic cycle for the transformation and how does the catalyst activate the substrate
Analysis of corrosion mechanisms and preventative measures
Find molarity, molality, percentage composition, boiling and freezing point of a solution - What are the boiling and freezing points of the solution?
Find the volume of FeSO4 solution - What volume of 0.200M FeSO 4 solution would be required to react with 20.0mL of 0.250M KMnO 4 according to the following equation?
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