Consider two electrolytic cells A and B. Cell A contains a 0.20 M CoSO4 solution and platinum electrodes. Cell B differs from cell A only in that cobalt metals are used as electrodes. In each case, a current of 0.20 A is passed through the cell for 1.0 h. (a) Write equations for the half-cell and overall cell reactions for these cells. (b) Calculate the products formed (in grams) at the anode and cathode in each case.
LECTURE 1/CHAPTER 1 – A Broad Intro to Biology - 8/31/17 Biology- Scientific study of life Evolution- Very slow process of change over time that accounts for the immense diversity of life It can also be described as the cumulation of favorable changes or beneficial mutations over time When we think of mutations, we usually give it a negative connotation, but evolution deals with favorable mutations Common themes to always keep in mind when studying biology are organization¸ information, energy and matter, interactions, and evolution. Organization is key in life, think of the organization that was present from when you were a zygote to where you are today There was a set of order in the DNA, the source of information, in how you developed Organisms cannot survive without energy or interactions, on a microscopic level in cells or in a large environment like an ecosystem. Energy constantly flows due to interactions among organisms. For example… 1. Sun’s light energy -> plants that convert it to usable energy -> organisms who use that energy for work First let’s look at ORGANIZATION Why are we called organisms Organum roughly translates to ‘following a set of orders’ An organism is a life form that follows a set of orders (cells on a microscopic level do this) Biology follows a hierarchy of complexity In reductionism, we study complex systems by reducing them to their simple components to make them easie
