Solve a=h/2(b1 + b2) for h. is this like the one before? we are a bit confused.

What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added

Pls i will do pls imma diewhat forms white light? (4 points)a. combination of all wavelengths of ultraviolet light b. combination of all wavelengths of visible lightc. absorption of electromagnetic waves d. absorption of infrared rays

How many grams of oxygen gas will react completely with a block of calcium metal that is 3.0 cm by 3.5 cm by 4.2 cm, if the density of calcium is 1.55 g/ml? show all steps of your calculation as well as the final answer.