4. Calculate the mass of KCl produced during the reaction of 108 g of potassium and 125 g of Cl2. 2K+C12=2KCI
(determine the Limiting Reactant and Reactant, and finally calculate the mass of product produced)

Idon't mean to be a smart alec, length of atoms' bonds is the simplest way to define it.

The population of unionid mussels decreased after zebra mussels were introduced. zebra mussels competed with the unionid mussels for food. the zebra mussels were able to displace the unionid mussels, allowing the zebra mussel population to increase  over the years. the unionid mussel population decreased because  of lack of food.

Polyethylene is a strong synthetic polymer that can be used to make toys and bottles. this makes plastics which are important also to people but sometimes it lead to harmful environmental effects such as global warming if these plastics are burned.