Which element is present in all amino acids but not necessarily in fats or carbohydrates?

Why is carbon ideal for making different compounds?

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring

Magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. trial 1: trial 2: data mass of empty crucible with lid trial 1: 26.688 trial 2: 26.681 mass of mg metal, crucible, and lid trial 1: 26.994 trial: 2 26.985 mass of mgo, crucible, and lid trial 1: 27.188 trial 2: 27.180