If 20.5 g of chlorine is reacted with 20.5 g of sodium, which reactant is in excess?

is in excess.

Explanation:

To calculate the moles :

According to stoichiometry :

1 mole of  require 2 moles of

Thus 0.29 moles of will require= of

Thus is the limiting reagent as it limits the formation of product and is the excess reagent.

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

answer: they produce more slow than unicellular organisms.