Air consists of 78% nitrogen, 20% oxygen, 1% water vapor, 0.97 % inert gases and 0.03% carbon dioxide and other gases. How many solvents are present in air? Group of answer choices

Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage.

How do i complete this electrolysis of water lab? i’m at home, so i don’t have the materials, and the lab didn’t properly work and was incomplete at school.

6. using 3 – 4 sentences explain (in your own words) why water expands when it freezes? 7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation.