If a solid residue remains after ethanol evaporation in step 9, is the residue sand, salt, or salicylic acid?

How can you use chemical equations to predict the products of the reaction you can carry out?

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.