Me podrían decir un ejercicio de Reactivo limitante y en exceso con explicación? porfavor

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

Identify the lewis acid in this balanced equation: ag+ + 2nh3 -> ag(nh3)2+a. ag+b. nh3c. ag(nh3)2+

Which of these statements best explains why space exploration should be encouraged? it prepares humans to live without oxygen. it dispel myths about objects in space. it prevents comets and asteroids from striking earth. it creates technology to absorb harmful radiations in space.