Answers edited by Simon Moore

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• Woollen clothes are biodegradable but nylon clothes are not. Why do you think is the case?
  
• Silver emits light of 328.1 nm when burned. What is the energy of a mole of these photons?
  
• Question #f678c
  
• What is the name of the compound # P_2O_5#?
  
• What is the difference between an electrophilic substitution reaction and a nucleophilic substitution reaction?
  
• Question #b65fa
  
• Why do bases feel slick in nature?
  
• Any 3 reasons for profuse use of plastics although it is harmful?
  
• The half-life of cobalt-60 is 5.2 years. Find the time it would take for a sample of 0.5 grams to decay to 0.1 gram?
  
• Question #0ae32
  
• Consider a mixture of water, sand, and oil. How many phases are present? How could you separate mixture into individual substances?
  
• Question #af560
  
• What is the pH of a #1*10^-5# #M# solution of sulfuric acid?
  
• Question #c2f50
  
• Does pure water have a concentration?
  
• How do you convert 2 tons to grams?
  
• All of the reagent solutions have a concentration of 0.2 M. This means that there is 0.2 mole of dissolved substance per liter of solution. What will be the concentration after mixing, assuming you use equal volumes of each solution?
  
• Question #147e5
  
• How would I convert the following to ppm? 3 grams of lead found in 30kg of soil.
  
• Question #edc6b
  
• What is an example of a colloid?
  
• Question #39df6
  
• Is a suspension a homogeneous or a heterogeneous mixture?
  
• How can you can tell the difference between a solution and a clear colloid?
  
• How much energy (in joules) is required to raise the temperature of 200g of liquid water from 20c to 50 c?
  
• How can I explain the enthalpy of a system?
  
• Question #73746
  
• What are the advantages and disadvantages of emulsion polymerization as compared to bulk and solution polymerization?
  
• Question #ece79
  
• Question #8af18
  
• What safety equipment should always be used when working with glass or chemicals?
  
• Why alkenes called olefins?
  
• Question #5f334
  
• Question #2a118
  
• What is the difference between compounds and mixtures?
  
• Why is cholesterol in the blood?
  
• Does pure water have more H+ ions than OH- ions?
  
• What's one thing you like about Socratic?
  
• Question #ffab1
  
• What is formal charge and how is it determined?
  
• When you blow air into a balloon, not only there will be increase in it's pressure but also it's volume. Is it a violation of Boyle's law?
  
• Why does the Antarctic have a large hole in the ozone, when no one even lives there?
  
• A #"standard solution"# is #"aqueous"#, #"unsaturated"#, #"a mother solution"#?
  
• Question #a9349
  
• Question #87757
  
• Question #2a46a
  
• How many grams of water could be made from 5.0 mol #H_2# and 3.0 mol #O_2#?
  
• Why do bases feel slippery?
  
• Question #e788e
  
• Question #2d155
  
• What is laughing gas called? ?
  
• Why are resonance structures necessary?
  
• How does plastic benefit and harm the environment?
  
• What are some examples of colloids and suspensions?
  
• What is a neat liquid?
  
• Why can't we react francium with water?
  
• What states of matter can flow?
  
• Question #3c6f1
  
• What is the highest point on earth?
  
• Question #68599
  
• Question #ebf5e
  
• One solution contains 55 g #NaCl # per liter. and another contains 55 g #KCl# per liter. Which solution has the higher molarity? How can you tell?
  
• What volume of concentrated #HCl# contains a mass of #125*g# #HCl#?
  
• Question #42299
  
• What are the differences between hydration, hydrolysis and condensation?
  
• Question #1e971
  
• Question #80627
  
• What are the products when Alka Seltzer dissolves in water? Is it water and carbon dioxide, i'm not really sure with that
  
• Why is an alkyl group is denoted by #"R"#?
  
• What volume of a #1.5*mol*L^-1# solution is required to deliver a #3.0*mol# quantity of solute?
  
• Is combustion a physical or chemical change? Why?
  
• Question #f92a2
  
• Can a rubbing alcohol conduct electric current?
  
• Is uranium a fossil fuel?
  
• On a mountaintop, it is observed that water boils at 90°C, not at 100°C as at sea level. Why does this phenomenon occur on the mountaintop?
  
• Question #ce94f
  
• How does the mass of the substance effect the specific heat value?
  
• Is there a membrane that stop liquid water but let Methane gas in?
  
• What is indicated by the #methyl-# prefix?