Why would this change be an improvement? What force or momentum principle is this Improvement based on? (Project about egg drop) *For the improvement I stated that I could add a parachute to decrease its speed*

What is the total reduction potential of a cell in which potassium (k) is reduced and copper (cu) is oxidized? a. 2.59 v b. 3.27 v c. -3.27 v d.-2.59 v

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0