Which expression gives the mass of O2 produced when 15 g Na2O2 (molar mass 78 g) reacts with water according to the question below?

Figure 10-1 study figure 10-1. the strong nuclear force felt by a single proton in a large nucleus

Agas at 155 kpa and standard temperature has an initial volume of 1.00 l. the pressure of the gas rises to 500 kpa as the temperature also rises to 135°c. what is the new volume? 2.16 l 0.463 l 0.207 l 4.82 l

Sulfuric acid is a polyprotic acid. write balanced chemical equations for the sequence of reactions that sulfuric acid can undergo when it's dissolved in water.