Answers edited by Simon Moore

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• Does pure water have a concentration?
  
• What volume of concentrated #HCl# contains a mass of #125*g# #HCl#?
  
• How does plastic benefit and harm the environment?
  
• What is a neat liquid?
  
• Question #edc6b
  
• Question #73746
  
• What is formal charge and how is it determined?
  
• Question #2d155
  
• Question #8af18
  
• How does the mass of the substance effect the specific heat value?
  
• Question #1e971
  
• Woollen clothes are biodegradable but nylon clothes are not. Why do you think is the case?
  
• What are the advantages and disadvantages of emulsion polymerization as compared to bulk and solution polymerization?
  
• How would I convert the following to ppm? 3 grams of lead found in 30kg of soil.
  
• Does pure water have more H+ ions than OH- ions?
  
• Question #0ae32
  
• Is a suspension a homogeneous or a heterogeneous mixture?
  
• What is laughing gas called? ?
  
• Is uranium a fossil fuel?
  
• How many grams of water could be made from 5.0 mol #H_2# and 3.0 mol #O_2#?
  
• Why alkenes called olefins?
  
• Question #f678c
  
• Is combustion a physical or chemical change? Why?
  
• Question #ce94f
  
• Question #a9349
  
• What are some examples of colloids and suspensions?
  
• Question #42299
  
• Question #5f334
  
• Question #af560
  
• What is the pH of a #1*10^-5# #M# solution of sulfuric acid?
  
• Question #e788e
  
• 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?
  
• Question #2a46a
  
• What states of matter can flow?
  
• Question #68599
  
• Any 3 reasons for profuse use of plastics although it is harmful?
  
• Question #c2f50
  
• Question #ece79
  
• Question #147e5
  
• Question #39df6
  
• What are the products when Alka Seltzer dissolves in water? Is it water and carbon dioxide, i'm not really sure with that
  
• What's one thing you like about Socratic?
  
• Question #87757
  
• Why do bases feel slippery?
  
• Is there a membrane that stop liquid water but let Methane gas in?
  
• How can you can tell the difference between a solution and a clear colloid?
  
• Question #2a118
  
• Question #ebf5e
  
• What is an example of a colloid?
  
• 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 a #1.5*mol*L^-1# solution is required to deliver a #3.0*mol# quantity of solute?
  
• Question #b65fa
  
• What is the difference between compounds and mixtures?
  
• 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?
  
• What safety equipment should always be used when working with glass or chemicals?
  
• What is the name of the compound # P_2O_5#?
  
• 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?
  
• How much energy (in joules) is required to raise the temperature of 200g of liquid water from 20c to 50 c?
  
• A #"standard solution"# is #"aqueous"#, #"unsaturated"#, #"a mother solution"#?
  
• How can I explain the enthalpy of a system?
  
• Question #f92a2
  
• What is the difference between an electrophilic substitution reaction and a nucleophilic substitution reaction?
  
• What is the highest point on earth?
  
• Question #3c6f1
  
• Consider a mixture of water, sand, and oil. How many phases are present? How could you separate mixture into individual substances?
  
• What is indicated by the #methyl-# prefix?
  
• Silver emits light of 328.1 nm when burned. What is the energy of a mole of these photons?
  
• Question #ffab1
  
• What are the differences between hydration, hydrolysis and condensation?
  
• Can a rubbing alcohol conduct electric current?
  
• 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?
  
• Why are resonance structures necessary?
  
• Question #80627
  
• Why is an alkyl group is denoted by #"R"#?
  
• How do you convert 2 tons to grams?
  
• Why can't we react francium with water?