If you only had $20.00 for gas, how many kilometers could you travel driving a Pontiac Aztek?

What is the name of this hydrocarbon?

State one important difference between a physical change and a chemical change?

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.