Prompt As part of a laboratory investigation, a student bubbles 16 g of hydrogen bromide gas into a beaker filled with 500 mL of pure water. The student measures the water's pH and observes that it drops from an initial value of 7.00 to 0.02. The reaction between the water and hydrogen bromide can be modeled by HBr + H2O ↔ H3O+ + Br- How many moles of HBr did the student bubble into the beaker of water?

  the mississippians were considered to be  horticulturalists, which means they were

In a laboratory, 1.55mg of an organic compound containing carbon, hydrogen, and oxygen is burned for analysis. this combustion resulted in the formation of 1.45mg of carbon dioxide and .89 mg of water. what is the empirical formula for this compound?

In vapor-liquid equilibrium in a binary mixture, both components are generally present in both phases. how many degrees of freedom are there for such a system? the reaction between nitrogen and hydrogen to form ammonia occurs in the gas phase. how many degrees of freedom are there for this system? steam and coal react at high temperatures to form hydrogen, carbon monoxide, carbon dioxide, and methane. the following reactions have been suggested as being involved in the chemical transformation: