Classify each of the following as a pure substance or a mixture. If a mixture, indicate whether it is homogeneous or heterogeneous:. (a) rice pudding, (b) seawater, (c) magnesium, (d) crushed ice.

Suppose you got a low yield of benzoin from your benzoin condensation reaction and thus only have 0.300 g of benzoin to use as the starting material for this reaction. how much concentrated nitric acid should you add? (concentrated nitric acid is 15.8 m). write your answer in the form x.xx ml

Analyze how limestone is weathered and identify the features that are formed as a result of this dissolution

Is a pencil falling to the floor anon contact force, a force, or a contact force