In order to implement Comparable in a class, what method(s) must be defined in that class?

A sample of gas is originally at 500.0 K and a volume of 12.0 L.  If the sample is heated at constant pressure to 1000.0 K, what will be the new volume, assuming the amount of gas stays constant?

For the reaction below, how many L of 0.250 M Cu+2 are required to completely react with 0.50 mols Ag?                               2 Ag(s) + Cu+2(aq) –> 2 Ag+1(aq) + Cu(s)  

 What is Avogadro’s number?

How many moles of O are there in one mole of Mn(HSO3)2·4H2O?

Name two types of aquatic ecosystems.

Name a cell type that reproduces by binary fission.

Name one organelle unique to animal cells and one organelle unique to plant cells.

What is an example of a density-dependent factor and an example of a density-independent factor affecting a population’s growth?

What is the product of the light-independent reactions of photosynthesis?