18P 18E 16N Using the provided PEN number what must be the mass of the element described?

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?

Asolid that forms and separates from a liquid mixture is called