Question: Discussion Topic 1: Problem Solving For you to succeed in even a general education science course like this one, it will likely require all...

Question:

Discussion Topic 1: Problem Solving

For you to succeed in even a general education science course like this one, it will likely require all of us to work together. Even the greatest scientific minds of the past and present didn't and don't work alone. So, let's start that process here and now. 

For this topic, you will select two Cumulative Problems. One from each chapter of the text this week's Lesson and solve and discuss them with the rest of us. 

You need to:

*state the problem numbers

*show work to find solution (embed images or use the fx button on the Rich Text Editor)

*explain in the text how you approached and worked through the Cumulative Problem

 If you cannot solve the problem at first, no worries, your classmates and myself will give you help you along and you can edit your problem until it is due. If you are having trouble, show your work and explain where you are getting stuck.  Ideally, you will choose a Cumulative Problem that you had a hard time solving until something clicked (which you would then explain--what you figured out that you did wrong, etc.). Either way, you should lead a discussion about the problem. This will help everyone go through the thought process of these problems, see different ways that students set them up, compare approaches, maybe learn new strategies and hints, recognize mistakes, etc.  Remember, you are not getting graded on whether you solve the problems correctly, but rather the attempt you make and the discussion you have with us related to it. So it will likely be more beneficial to you to select challenging problems with which you need help as opposed to easy ones that you can already solve. These Cumulative Problems and their discussions will be included together in one post. After you decide which problems you would like to discuss, start a thread in the Topic 1 Forum. You need not fill in the content—only begin a thread with a subject line that includes your name and the problems you will be discussing. When you are ready to fill in the details of the post, you can simply go back into your post and click "Edit" and put the information into your post. By starting your post, you are claiming your problems and no other student is allowed to choose the same problems.

Problem 1:

116.Hydrogen, a possible future fuel mentioned in Problem 115, can also be obtained from ethanol. Ethanol can be made from the fermentation of crops such as corn. How much hydrogen, in grams, could be obtained from 1.0 kg of ethanol (C2H5OH)?

 (Tro 201-202)

, Nivaldo J. Introductory Chemistry,  5th Edition. Pearson Learning Solutions, 2014-01-01. VitalBook file.

Problem 2:

105.What solution can you add to each cation mixture to precipitate one cation while keeping the other cation in solution? Write a net ionic equation for the precipitation reaction that occurs.

(a)Fe2+ (aq) and Pb2+ (aq)

(b)K+(aq) and Ca2+ (aq)

(c)Ag+(aq) and Ba2+ (aq)

(d)Cu2+ (aq) and Hg22+ (aq)

 (Tro 245)

, Nivaldo J. Introductory Chemistry,  5th Edition. Pearson Learning Solutions, 2014-01-01. VitalBook file.