In lab, you removed the center of a potato (made a little po…
In lab, you removed the center of a potato (made a little potato bowl), and then filled the potato with sugar. Then, you put the potato into a beaker containing iodine and water. By then end of lab, the sugar dissolved in water and the outside of the potato turned black. A. Why did the sugar dissolve? B. Where did the water come from that affected the sugar? C. Why did the potato turn black? D. What movement were you trying to observe?
Read DetailsLab Quiz 7 = OSMOSIS AND DIFFUSION Time Limit = 25 minutes. …
Lab Quiz 7 = OSMOSIS AND DIFFUSION Time Limit = 25 minutes. You must complete it in one 25-minute session. Honorlock is required for this quiz. Remember to submit it as soon as you are finished. Point Value = 20 points possible. IF YOU NEED TO USE SCRAP PAPER, YOU MUST SHOW THE BLANK PAPER TO THE CAMERA FIRST, THEN WRITE WHAT YOU NEED TO, THEN SHOW THE WRITTEN-ON PAPER TO THE CAMERA. Be sure that you type all your answers and any work into the quiz, too, please. Spelling Counts. Reminder: Late submissions are NOT accepted. You will earn ZERO points if submitted late. This information is in the Course Outline. Honorlock is required to take this quiz. Remember to comply with Honorlock’s identification requirements, and show your photo ID, please. Acceptable forms of ID include: CCAC Student ID, Driver’s License, or other Government-Issued ID. REMINDERS: Exams, tests, and quizzes are closed book, closed notes, closed slides, closed assignments, and taken individually. No additional devices allowed other than the one (1) being used for the exam/test/quiz. Only the test/exam/quiz screen should be open. No other windows, websites, programs are permitted. “Cheating = The act or attempted act of deception by which a student misrepresents that he/she has mastered information on an academic exercise that, in fact, has not been mastered.”If you are found to be cheating on an exam or assignment at the very least, you will receive a grade of “0” for that exam or assignment. This may also lead to a failing grade in the course and disciplinary action by the college and the Dean of Academic Affairs. Please do not diminish your learning experience by cheating.
Read DetailsIn another experiment, a dialysis tubing “bag” containing ph…
In another experiment, a dialysis tubing “bag” containing phenolphthalein (C20H14O4) and water (H2O) was placed into a beaker containing sodium hydroxide (NaOH) and water (H2O). Another “bag” containing starch (C27H48O20) and water (H2O) was placed into a beaker containing iodine (I2) and water (H2O). Using what you know about diffusion and membranes, briefly (2 – 4 sentences) explain the following: A. Why did the inside of the iodine “bag” turned black but the beaker solution stayed yellow-brown? B. Why the phenolphthalein “bag” turned pink but the beaker solution stayed (or should have stayed) colorless?
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