Answers edited by Simon Moore

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