Answers edited by Simon Moore

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