On January 28, 2014, in Germany, a barn containing 90 cows exploded when a stray spark caught the methane trapped in the building on fire. The building was damaged and one cow was slightly injured with minor burns. Assume that the 90 cows were producing 250L of methane per day and that there was a 15 hour collection in the barn when it ignited. __CH4 + __O2 → __ CO2 + __H2O a) How many liters of methane was in the barn when it exploded? b) What mass of water was generated in the explosion? (SET WORK INTO TRAIN TRACKS)

A reaction generates hydrogen gas, H2, as a product. The reactants are mixed and sealed in a 250-mL vessel. After 20.0 minutes, 3.91x10-2 mol H2 have been generated.  Calculate the final concentration (in M) of H2 gas.

Commercial concentrated hydrochloric acid has the following specification: Density = 1.2 g/mL; Weight percentage is 37% w/w: Molecular weight of HCl is 36.46 g/mol. If 12.0 mL of conc HC) is added to the reaction, how many moles of HCI have been added? Report your answer to the correct number of significant figures: do not report the units in your answer.OGMU 2020 QUESTION 3 If 5.0 mL of t-pentyl alcohol are involved in the reaction, how many moles of t-pentyl alcohol are present? Round your answer to the correct number of significant figures. Do not include the units in your answer. IUPAC name of t-pentyl alcohol is 2-methyl-2-butanol.OGMU 2020 (Hint: use the CRC Handbook Of Chemistry and Physics from our online library to get the correct numerical constants.) QUESTION 4 Given that the nucleophilic substitution reaction used 5.0 mL of t-pentyl alcohol and 12.0 mL of conc. hydrochloric acid to produce t-pentyl chloride, what was the limiting reagent in the overall reaction? GMU 2020 O…

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