A rock has a mass of 96.33g and a volume of 3l. What is the denisity of the rock

What volume would 2.25 moles of ne has occupy at stp?

Find the mass, in grams, of 5.00*10^23 molecules of f2

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.