Which of these accurately describes the products of a reaction?

a) substances that are used in a reaction
b) new substances that are present at the end of a reaction
c) substances that do not participate in a reaction
d) substances that were not used up in a reaction

Which is the most accurate name for the covalent compound p2o3?

This is a form of winter precipitation. it is frozen precipitation falling as ice pellets. snowflakes melt into raindrops as they pass through a thin layer of warmer air. the raindrops then refreeze into particles of ice when they fall into a layer of sub-freezing air near the surface of the earth. this precipitation is called a) hail. b) rain. c) sleet. d) snow.

Earth's atmosphere is composed of mostly two gases. name the two gases that make up the majority of the atmosphere and use the pie chart to tell the percentages of each.