In a reaction of iron and oxygen to produce iron (III) oxide, 2.1 g of iron were completely consumed. What are the percent yield and percent error if 2.5 g of iron (III) oxide is actually produced?

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.