phosphorus burns in air to produce a phosphorus oxide in the following reaction if 0.489 of phosphorus burns what mass of oxygen is used

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

Which of the following is not one of the steps in the scientific method a. hypothesize b. summarize c. analyze d. familiarize

Air can be considered a mixture. which statement does not explain why?