You have a vial containing 20.0g of oxygen gas. What is the percent composition of oxygen? SELECT AN ANSWER

Cannot be determined without more information

83%

100%

90.8% oxygen

pleas

pleas

How does human environment effect the biosphere

Ineed with a hypothesis my question is can seeds sprout in different locations?

Select the correct answer. which statement applies only to the axial skeleton, not the appendicular skeleton? a. it contains a pivot joint. b. it has muscles attached that work in pairs. c. it contains red bone marrow. d. it possesses fossa for bone articulation. e. it protects the heart and lungs.