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Everything posted by popcornfrenzy

  1. Okay noted Sir I'll try to solve it with the best of my ability thank you for the example
  2. That's the full statement of the problem Sir Studiot and I really don't know what to do at this point. I kinda think it's more a given rather than a problem.
  3. The problem: A liter of a mixture pf 0.4 Sodium Chloride and 0.2M Potassium Chloride. I really don't know what to do with the compounds present in the solution. Do I need to add them? I'm really lost. This is the last problem in the activity, the others are easy to understand and solve, but for me this one is hard to comprehend. Maybe I need to calculate for their masses individually? What do you guys think?
  4. What our activity want us to identify: list the number of different minerals in the sample and give a description of each one. It is a 4 items activity, I didn't attach the others since they are easy to identify. Please help me with this one.
  5. I'm sorry for the misunderstanding I thought the ones you mentioned sir are all dangerous. I think our instructor is referring to now when he gave us this question because it concerns humanity. Honestly I never thought that this post will blow up but now I think I'll go with what sir @exchemist stated since it was never mentioned in my textbook that volcanic necks are indeed dangerous. Thank you all for the answers you gave to me I appreciate every information that I get from these replies.
  6. Thanks for the answer Sir oh I really thought that it was actually stratovolcanoes that are dangerous since they've taken a lot causalities in the past. For the volcanic neck I found out in wikipedia this passage. "When present, a plug can cause an extreme build-up of pressure if rising volatile-charged magma is trapped beneath it, and this can sometimes lead to an explosive eruption." Sir umm I just want to further verify which is really the most dangerous and which is the safest, sorry for validating too much. Sorry for taking some of your valuable time here guys I'm really grateful for the help you are all giving me
  7. Thank you sir, you're right I'm actually taking the second semester of my freshmen year. One of our subjects is geology and geography here we kinda tackle in depth how geological processes occur on earth. In my question I was actually asking for the least dangerous among the landforms I mentioned, the most dangerous one, in general are mentioned to be the stratovolcanoes so I kinda relied on that. In terms of what I was looking for, I can't seem to determine which is the one that will be considered "safe" though I kinda doubt that word after researching a bunch of stuff in the internet.
  8. 1. If you were to rank volcanic landforms in terms of the risk they pose to humans, which would be the most risky landform to encounter, and which would be relatively safe? Explain your answer. This is the question in my assignment, I was able to determine the the most dangerous, which are the stratovolcanoes though research, but when I was determining which is the safe one I've encountered a lot of problems. Here are the choices base on my textbook - shield volcanoes, cinder cones, calderas, fissures, basalt plateaus, lava domes, and volcanic necks. Based on what I've searched on the internet, all of the the volcanoes mentioned are dangerous, the calderas are still dangerous due to the active volcanoes that are commonly beneath them like in the case of the yellowstone volcano, fissures are dangerous and can lead to basalt flow or plateaus that an article mentioned to be more dangerous than a super volcano, lava domes can also collapse and create destruction, and lastly volcanic necks can explode due to the buildup of pressure beneath them. At this point I don't even know what's safe anymore.
  9. Aphanitic: (Pink) Rhyolite Porphyritic: Andesite Phaneritic: Diorite Granidiorite Granite Granular: Quartzite I kinda forgot the fact that coarse-grain is the only texture that forms within the Earth in contrast to the others that are formed on the Earth's surface. I actually think that C is indeed Granite based on this picture I found in the internet. Thanks for the comparison I think I know now perhaps? I'm open for validation Sir
  10. I managed to identify A B and D what got me confused is the texture of C I kinda think it's Phaneritic based on how similar it looks to B in terms of the texture, but I've searched things related to the picture on the internet and seen people saying it's Porphyritic. So what do you think guys? Plus knowing what kind of rock it is will also help, though I do think it's a granite, correct me if I'm wrong thank you.
  11. Oh I'll take note of that isn't the SiO2 the empirical formula or did I get that wrong?
  12. Thanks to both of you for the answers I can finally get a clearer picture on how these elements behave as a compound in the magma, I actually thought oxygen exists here as an ion along with the others that I mentioned. Good thing it was cleared up.
  13. I just want to ask how oxygen, silicon, aluminum, potassium, calcium, etc., basically the liquid portion of magma, how are they in liquid form? In our textbook, it was mentioned that the melt consists of mobile ions of these elements so does it mean the liquid part is a congregate of ions in the form of ionic liquid? The part that got me confused is with the characteristic of oxygen because it only exists as a liquid in -183 oC, presumably at lower temperatures, while the asthenosphere is around 1300 oC which makes me think that it should be in a gaseous form. Why is it a liquid along with the other elements I mentioned?
  14. Oh thanks I realized a lot things especially with the addition of salt and sulfuric acid though I'm understanding the concept bit by bit gladly I'm on the right path
  15. I'm kinda confused as to how chemical reaction occurs in Electrochemistry; thus, I have questions: 1. Can Redox reaction occur in metals just changing their oxidation numbers? like Zn + Cu2+ turning to Zn2+ + Cu and if so how is it considered a chemical reaction when there is no compound being formed, no decomposition happening, nor displacement occurring just two metals transferring electrons and not even forming an alloy. 2. How does the decomposition of water via electrolysis works? Like I saw an example in the internet where two isolated containers of solution of Zn, Cu and SO42- with electrodes of Zn and Cu submerged in them that allows for electrons to travel spontaneously. However, in H2O there is no individual containers thus, how do we know that Oxygen is the one being pulled of its electrons and not Hydrogen? Plus what are the electrodes in this case made of cause it's easier to understand if the solution shares the same composition with their electrodes, but in hydrogen and oxygen it's obvious to think that they are not the electrodes here since the two are solid only in extreme temperatures. Also is there an specific property that makes an electrode and electrode?.
  16. Oh thanks to both of you, I further understand the role of the constant now in mathematical terms based on what you've written it Sir Studiot and thanks for further elaborating Sir Swansont. I think I need to polish my fundamentals especially on my math more now that I'm pursuing a science course. I'm planning to take chemistry for my MA and PhD so I really need to understand such basic concepts. Forgive me for lacking mathematical skills as I need to improve more on it. Also, Sir Studiot, I searched for the Environmental Theory is it by Florence Nightingale? is that what you're referring to? Forgive me for my English as I'm not yet quite proficient with it as a second language here in the Philippines. Also thanks for the warm welcome.
  17. Oh thanks for the reply, I was wondering what is that J-shaped glass tube that Robert Boyle used in his experiment now I know that it's a manometer. Aside from that, determining relationships mathematically is purely based on logic? I think that's the reason why I can't understand it at first thank you so much.
  18. How are variables in the Gas laws are formulated in such way that show direct and inverse relationships? Hi I'm a first year Environmental Science student I just want to ask how scientists were able to determine which is which like in Boyle's law, he determined that by multiplying the initial pressure and volume and making it equal to the change in pressure and volume produces an inverse relationship. I get that if you look for the missing variable; for example a high value for V2 in the equation P2= (P1)(V1) / V2 will produce a lower value for P2, but by looking at the formula P1V1 = P2V2 alone how was he able to determine that it would lead to inverse relationship. Taking note of the k = P1V1, without comparing the changes, how was he sure that just by multiplying both P1V1 will lead to the relationship. Same question for other gas laws such as the Charles's law that show direct relationship through the division of V and T. It might be a dumb question to ask sorry, it's just that I'm having a hard time comprehending these things.
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