Consider the reaction of sodium sulfide with oxygen and water. 2Na2S (aq) + 2O2 (g) + H2O = Na2S2O3 (aq) + 2NaOH (aq)

Determine the limiting reactant in a mixture containing 100 g of Na2S, 47.2 g of O2, and 18.8 g of H2O. Calculate the maximum mass (in grams) of sodium thiosulfate, Na2S2O3, that can be produced in the reaction.

This drawing shows a human body system. what is the primary function of this body system?

Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility

Which of the following is an example of how telecommunication devices people do their jobs? a.) a security guard checks the time using a digital watch. b.) a banker does some quick math using a solar calculator. c.) a nurse uses a digital thermometer to take a patient’s temperature. d.) a construction worker reports in to his office using a cell phone.