Combustion of 6.90g of this compound produced 13.8g of co2 and 5.64g of h2o. what is the empirical formula of the unknown compound?

Assuming complete dissociation of the solute, how many grams of kno3 must be added to 275 ml of water to produce a solution that freezes at -14.5 c? the freezing point for pure water is 0.0 c and k_f is equal to 1.86 c/m

Witch two conditions can limit the usefulness of the kinetic molecular theory in describing gas behavior?

As light moves from one material into the next, which of the following affects how much the light waves will refract, or bend? angle at which the ray strikes the medium color of the material density of the material temperature of the light wave