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

What is common about these molecules? a. their atoms are held together by covalent bonds. b. they are all made up of the same two atoms. c. their atoms are held together by ionic bonds. d. they are all made up of oxygen atoms only.

Choose all the answers that apply. as ocean depth increases, temperature decreases temperature increases pressure increases pressure decreases salinity increases density increases

Which rate indicates the number of children that would be born per woman if she were to live to the end of her child bearing years