Calculate the number of molecules in 0.000756 grams of gaseous oxygen.

Identify two types of chemical bonding in the source of dietary potassium

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