Can anyone help me on this? (Do not put a random answer or points or you’ll be reported)

What is the value of keq for the reaction expressed in scientific notation?

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 morality of 2.50 l of solution that contains 1.85 mol of anhydrous sodium tetraborate?