Balanced equation for this? hbr + khco3  h2o + kbr + co2

If the mass of the products measured 120g what would the mass of the reactants a. 30g b. 60g c. 120g d. 240g

0.2348 grams of pbcl2 used to form 44.0 ml of solution.

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