Which of these best matches an object in space with its characteristic? ganymede → orbits the sun inner planet → gaseous in composition
outer planet → many moons
meteorite → comet which hits Earth's surface

After hydrogen and oxygen, witch element makes up almost all of the most common substance in your body

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers

Which tool could you see a plant cell? a. a filter b. a microscope c. a microwave d. an electromagnet