Which is an example of physical contamination? a) broken glass b) lead c) toxins d) bacteria

Explain the relationship between forward and backward reactions in equilibrium, and predict how changing the amount of a reactant (creating a tension) will affect that relationship.

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work