Answers edited by Ryuu

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• When the pH of a solution is 12.83, what is [H+]?
  
• How would you explain all states of matter?
  
• Given #f(x)= x^2/(x+2)# how do you find #-f(x)#?
  
• What symbiotic relationships are seen in ecosystems?
  
• Question #5492a
  
• How do you graph #Y=abs [-3x] + 2#?
  
• Question #e2dc3
  
• How do you expand and simplify #(2x-3) (3x+4)#?
  
• What is the acceleration of a #0.30# kilogram ball that is hit with a force of #25# #N#?
  
• What is the difference between static friction and sliding friction?
  
• How can you tell if a precipitate forms when you mix two solutions?
  
• What property of matter does temperature measure?
  
• A tennis player hits a ball vertically with a speed of 10 m/s. How high does it go?
  
• At 1 atm and a temperature of 0 celcius which phase of #H_2O# can exist? Why?
  
• What is $25,000 at 8% for 5 years?
  
• How do you simplify #3sqrt8*2sqrt7#?
  
• What would happen if there were no heterotrophs on earth?
  
• Question #97d35
  
• How should one write a good summary?
  
• If the pressure on a gas is decreased by one-half, how large will the volume change be?
  
• Question #23181
  
• Question #6696a
  
• How do phase changes occur on a molecular level?
  
• How does heat get from the stove burner into your soup?
  
• Question #081b1
  
• How do you solve #-5( - 5v + 9) - 6v = 4( v - 6) - 9#?
  
• What is the pH of normal rainwater?
  
• What is the chemical formula of sulphur trioxide?
  
• What are diamond and graphite in relation to carbon?
  
• The net force on an object is zero if the two forces acting on it in which direction ? 1-opposite direction 2-same direction 3-sometimes opposite and sometimes same direction 4-all of above
  
• What is the domain of #g(x) = 3^(x+3)#?
  
• Your mass is 55 kg. You stand on a bathroom scale in an elevator on Earth. What does the scale read when the elevator moves up at a constant speed?
  
• How do you simplify #\frac { x ^ { 2} + 9x + 20} { x ^ { 2} - 2x - 24}#?
  
• How much energy is required to convert 429 g of water to steam at 156 °C?
  
• How do you calculate the pH of a strong acid or base?
  
• Question #58f14
  
• Why are some properties of diamond different from those of graphite?
  
• Question #010fe
  
• How do you solve #0= ( x - 8) ^ { 2} - 49#?
  
• How do you express 96,470,000 using scientific notation?
  
• Question #4e396
  
• How do you write a balanced equation for the combination of magnesium and oxygen to form magnesium oxide, #MgO#?
  
• What is the Arrhenius definition of acid?
  
• The DNA of humans and gorillas is about 98 percent identical. What does this say about humans and gorillas?
  
• When is it possible for velocity to be zero for an object that would be in motion?
  
• Question #8b2ee
  
• How do you simplify the expression: #2 times 7b#?
  
• How is the synthesis of ammonia represented?
  
• What is the equation for the reaction of Barium Nitrate Hydrochloric Acid?
  
• Why might Ketchup stored in a tin can lead to chemical contamination?
  
• Question #4613e
  
• Question #06afa
  
• How do you graph #x+4y=12# by plotting points?
  
• Question #a7c94
  
• Are there more than three states of matter?
  
• Where is each type of particle located in the atom?
  
• How were the elements arranged in Dmitri Mendeleev's periodic table?
  
• #"2659 J"# of heat energy are required to heat a substance with a mass of #"24.25 g"# from #"23.7"^@"C"# to #"163.5"^@"C"#. What is its specific heat capacity?
  
• How do you know how many lines to draw in a Lewis structure?
  
• Question #73653
  
• Can I predict if a compound has ionic bonds or covalent bonds? If so, how?
  
• How do you determine if a molecule non polar?
  
• A rock is dropped from a height of 2.5 meters. What is its velocity when it reaches the ground?
  
• Is #CO_2# an ionic salt or covalent molecule?
  
• Question #ada03
  
• How do you write 90% as a fraction?
  
• What gas has 8 protons and 8 neutrons?
  
• Are these pathetic fallacy: "Mist creeps; wet wind blows."?
  
• How do you solve #\frac { 1} { n } = \frac { 5} { 30}#?
  
• What is anything that has mass and occupies space?
  
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