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CrazCo

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Everything posted by CrazCo

  1. Thank you you two (woah used you twice in a row!) Anymore?
  2. Haha, it's very helpful/interesting. I liiiiiiikkkke it.
  3. CrazCo

    Chess

    I love chess. Really improves some mind-working skills.
  4. We had a 100 questions about microscopes and there are some I am unsure about or I don't know. I will provide my guesses so you know I atleast tried to complete this, I just want to know if they're wrong or right and if wrong what the right answer would be. Thanks ! These questions are all regarding Light Compound Microscopes Q: Under which magnification (low, medium or high) is an image brought closest to the eye. A: High (guessing but I want to be 100% sure) Q: Which magnification would be best suited for scanning several objects? A: Low Q: Which magnification provides the widest angle of view? A: Low Q: Why is it easier to locate objects using low power magnification rather than high? A: Low is less zoomed in giving it a larger area of focus. Q: Why is it good to center a specimen in the field of view before switching to high power? A: High power is hard to detect a whole object due to how far it zooms in so it'd be easier on the low power. Q: If you were trying to measure the diameter of a very small specimen which magnification would you use? A: High because if it was very small you would need the highest magnification to clearly examine it. Q: Explain why microscopes are stores with the low power lens in position. A: It is the most commonly used and it is used to center objects for other magnifications. Q: Why should the coarse adjustment focus not be used with a high or medium power lens? A: Maybe because it is so zoomed in that you can't properly make out the specimen so you may raise the stage so high it hits the lens. Q: A thicker lens is necessary for greater magnification, but results in a loss of resolving power. Explain why resolving power decreases as the thickness of the lens increases. A: Maybe because the more zoomed in the harder it is to view specimens. Q: Why is the microscope called a compound microscope? A: It has a combination of magnification lenses. Q: How do you determine total magnification? A: No Clue Q: What is the total magnification of the specimen when you str looking through each of the objective lenses on your microscope? A: No clue Q: Why is the built in pointer a useful feature of the microscope? A: It indicates the center ?? Q: Why are micrometers rather than milimeters used for microscopic measurements? A: Milimeters are not accurate enough and too big. Q: Why is the field of view brighter under low power? A: You zoom in less far enabling more light to enter your field of view? Q: A person switches from low to the high power objective lens of a microscope. The object being viewed disappears, even after careful focusing. Indicate why the object cannot be seen and suggest a technique that would help eliminate this problem. A: No clue Q: An oil immersion lens is often used to view very tiny objects. If an oil immersion lens has a magnifcation of 100x, calculate it's field of view. A: We didn't learn this material, ugh, don't know. Q: A correcting lens can be placed into the microscope to make objects appear in their normal (non-reversed) position. Suggest what reasons why the would be useful. A: - Easier to position the slide. (Don't know any more) Q: Why is it important to measure the size of the microscopic objects? A: No clue If you can answer or correct one, two or any amount I will bow in your presence.
  5. Thanks to everyone, I'll have many more science questions in the future.. first year of biology is not so fun
  6. Lol, yea, I plan on staying here, but I feel bad because I am always asking questions but when I got to a thread where someone else wants help I am unable to answer their question on account of my lack of knowledge. Ahh Well
  7. Thanks Swansont. ! That is a very good point.
  8. Yes, I don't have enough detail. Skepticism is probably not the best-fit answer, so that is probably why I am struggling. I have made it this far, so I think I'm going to keep with it. If you were to choose skepticism what would you have said to back it up?
  9. Basically we just have to write a page on what you think the most important quality of a scientist is. I have began and decided to write about skepticism. I jotted down all I could think of about why this is an important value of scientists, but it fails to meet the page-length standard. Could someone maybe give me an idea or two as to why it is?
  10. Homework sucks. I've honestly slaved on the google search and can't find any reliable sources. Anyone have an estimation or educated guess?
  11. TiO2 + C + Cl2 = TiCl4 + CO2 + CO I Got 2,3,4,2,1,2 as the coefficients and it works, but then i tried another way and it worked, so can there be multiple ways?
  12. ^ yea i do try to, but no matter what i type in on google it seems to give me terrible results, thanks for the help though!
  13. That's what it says on my sheet of questions skeptic, maybe it doesn't make sense?? and thanks shade !
  14. Why does the mass of magnesium increase and wood decrease when when they burn?
  15. 1) What type of chemical liaison must be present in an electrolyte? Give your reasons. 2) How come ionic solids don't conduct electricity, but are good conductors after their fusion? pretty please help
  16. Oops! This time it was my fault theres actually a +H2O at the end of the second side/ Sorru
  17. but one second i have another one i know works and i just can't get (will edit this post) I dont want the answers, more of a method to come to an answer this one HNO3 + Cu = NO2 + Cu(NO3)2 now i know it is easy to try random combinations of coefficients until it is balanced, but i want to know a method rather than jsut guessing
  18. i wrote it like it was an ionic bond and received 0 points for my answer, my chemistry teacher claims it has to be covalent
  19. yay so it was the teacher and not me
  20. This test was in french and i put Iodure d'Arsenic (III) translating to Arsenic (III) Iodide and my teacher marked me incorrect saying it was to be arsenic triiodide or in french triidoure d'arsenic.. dont really know the proper english term but you catch my drift? So is there any defence i could prepare to back of my answer so i can get the points i lost?
  21. Hey again! I am just wondering like is there any methods to help me balance chemistry forumals. I can do the basics with the algebra formula, but with questions like:FeSO4 + K2Cr2O7 > Cl2 + CrCl3 + KCl + H2O i get dearly confused. so any methods?
  22. You all probably are experts in this department and will think my question is moronic, but with the formula AsI3 would it be written "Arsenic Triiodide" or "Arsenic Iodide (III)" Basically is it a covalent or ionic compound or neither? LoL... Uppin Please :D
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