Propane is used as a fuel, commonly in portable grills. If 15.0 grams of propane are burned in the presence of 15.0 grams oxygen, what mass of carbon dioxide should be expected? Show work please.

C3H8 + 5O2 → 4H2O+ 3CO2

If two atoms are bonded to a central atom with no lone pairs, how will they be arranged

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

Consider the following reactions. (note: (s) = solid, (l) = liquid, and (g) = gas.) mg(s) + ½o2(g) → mgo(s) + 146 kcal/mole h2(g) + ½o2(g) → h2o(g), δh = -57.82 kcal/mole what type of reaction is represented by the previous two examples?