Answers edited by Dwight

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• What is the shorthand electron configuration of xenon?
  
• Question #c6e98
  
• Question #625bd
  
• Question #59d64
  
• Question #6eaaa
  
• You are given 230 grams of a substance with a half-life of 0.75 years. How much will remain after 3 years?
  
• If you have a glass of ice water outside on a hot day, sometimes people say the glass is sweating. What is really happening to the glass of water?
  
• . If a planet’s closest distance to the Sun is 1.00 AU, and its furthest distance from the sun is 9.00 AU, what would its orbital period be?
  
• Negative values on Position vs Time Graphs and Velocity vs Time Graphs?
  
• Question #1117f
  
• Question #7b556
  
• What is the maximum number of orbitals in a p sub-level?
  
• What does it mean to find the value of #theta# that is a solution of the equation #4sin^3(2theta)=-1#?
  
• Question #141ba
  
• Question #4f142
  
• Is H2PO4- stronger than HCN?
  
• What average force is required to stop a 1600 kg car in 9.0 s if the car is traveling at 80 km/h?
  
• How much work would it take to push a # 1 kg # weight up a # 3m # plane that is at an incline of # pi / 4 #?
  
• Question #1db35
  
• Question #40c12
  
• Physics help question 4?
  
• When 1.045g of calcium oxide is added to 50.0mL of water at 25.0°C in a calorimeter, the temperature of water increases to 32.3°C. Assuming density of solution is 1.00g/mL and a specific heat capacity of 4.19J/g˚C?
  
• What element’s valence electrons are located in 5s^25p^5?
  
• What percentage of the total mass of the compound #KAl_2S_2O_3# is due to the sulfur in the compound?
  
• Question #5db68
  
• You are in a desert on a hot day and see water in the distance. It is not really there, but results from refraction of light. What explains the behavior of the light waves?
  
• I cannot get this right. The fraction (total time) is messing me up. Can you provide a step-by-step for this one?
  
• How do you simplify the radical expression #sqrt72#?
  
• Question #f33c5
  
• What are the 4 fundamental forces of nature and what connects them together? How do they interact together?
  
• Question #4c074
  
• What caused the 23.5 degrees tilt of earth's axis?
  
• Question #cbd73
  
• 34.6g of propane is initially at 0 degrees celsius and 100kPa. If the temp of the gas is accidentally raised to 25 degrees celsius, what mass of propane must be released in order for the volume occupied by the gas to remain constant?
  
• How do you simplify 2 cubed root 81 + 3 cubed root 24?
  
• What kind of salt bridge do you normally find in a galvanic cell with Ag and Zn electrodes? Also, what solution would you put the electrodes in?
  
• Question #9046f