Answers edited by Simon Moore

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