I really need help with this and fast, any you could please answer I would really appreciate it, also please only answer if you actually do know the answer because people have been taking advantage of me because I’m giving a lot of points and this is due in like 30 min

The organism shown is a free-living one that is anchored to the bottom of ponds and streams during one stage of its life cycle what is the common name for the group to which this organism belong

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?