Chapter 1, Problem 1.135E

Please don't copy pharmaceuticals can be delivered by intravenous (IV) fluid. A patient is receiving an IV fluid at a flow rate of exactly 10 mL/min. The label on the IV bag indicates that the fluid has a concentration of 1.25 mg/mL. What is the delivery rate, in milligrams per minute, for this medication? I think it is 12.5mg/min but I am being told it's incorrect.

In Figure 1.2 you see a piece of salt and a representation of its internal structure. Which is the macroscopic view and which is the particulate view? How are the macroscopic and particulate views related?

A 500-mL bottle of Evian bottled water contains 12 mg magnesium. The recommended daily allowance of magnesium for adult women is 320 mg/day. Calculate how many 1-L bottles of Evian a woman would have to drink to obtain her total daily allowance of magnesium solely in this way.

Scientific models do not describe reality. They are simplifications aid therefore incorrect at some level. So why are models useful?

The Chemistry in Focus segment titled Dr. Ruth—cotton Hero discusses the enormous contribution of Dr. Ruth Rogan Benerito to the survival of the cotton fabric industry in the United States. In the discussion, it was mentioned that Dr. Benerito became a chemist when women were not expected to be interested in, or good at, scientific subjects. Has this attitude changed? Among your own friends, approximately how many of your female friends are studying a science? How many plan to pursue a career in science? Discuss.

In everyday language, the term conserve usually refers to protecting something.It is important to conserve natural resources. What does the term conserve mean in scientific language?

If the combination of iron filings and sulfur in Question 25 is heated strongly, the iron reacts with the sulfur to form a solid that is no longer attracted by the magnet. Would this still represent a “mixture”? Why or why not?

Many of the items you purchase are mixtures of pure compounds. Select three of these commercial products and prepare a list of the ingredients that are pure compounds.

Chemistry is an intimidating academic subject for many students. You are not alone if you are afraid of not doing well in this course! Why do you suppose the study of chemistry is so intimidating for many students? What about having to take a chemistry course bothers you? Make a list of your concerns, and bring them to class (or discussion with your fellow students and your instructor.