A hospital laboratory needs a 10% dextrose solution. However, only 5% and 20% dextrose concentrations are in stock. How much of the 20% concentration should be mixed with 100 fl oz of the 5% concentration to get a 10% solution?
What will be an ideal response?
Let x = the amount of 20% concentration.
0.05(100) + 0.20(x) = 0.1(x + 100)
5 + 0.20x = 0.1x + 10
0.1x = 5
x = 50 fl oz
You might also like to view...
Malcolm is troubled by his attempts to find a topic for his persuasive speaking assignment. After thumbing through magazines and books to find a topic, Malcolm still can't come up with any decent ideas
When he thinks of something, he immediately dismisses it saying, "That's a lousy topic; the audience will be bored." What technique should Malcolm utilize in this situation? A) logical divisions B) brainstorming C) categorical development D) piggybacking
Discuss how the proximity of an interviewer affects an interviewee's comfort level.
What will be an ideal response?
What factor involved in intercultural contact is at play here, and why?
A man from Latin America comes to the United States to study at a university. He behaves formally with women on campus--standing up when they enter the room, giving up his seat for them, holding doors for them, and so on. Some of the women tell him that his behavior is sexist and antiquated, and they ask him to stop. But the man replies that they should appreciate his behavior because it is far better than the disrespectful behavior (e.g., unwanted touching, catcalling) exhibited by many other men on campus. What will be an ideal response?
As a first step in persuading others, your textbook recommends classifying audience attitudes in terms of whether they agree or disagree with you, or whether they are undecided
Indicate whether the statement is true or false