Answers created by Kaisha

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• How is a catalyst is used in a reaction?
  
• How is the energy level of the products affected by the presence of a catalyst?
  
• What is the formula for calculating frequency?
  
• When the following equation is balanced, what is the coefficient for Mg? #Mg(s) + HCl(aq) -> MgCl_2(aq) + H_2(g)#
  
• Question #27f24
  
• How is Bohr's atomic model different from Rutherford's model?
  
• Question #07b70
  
• How many chromosomes would the sex cells of an organism with #12# chromosomes have?
  
• When what force is not large enough to hold a nucleus together tightly, the nucleus can become radioactive?
  
• Question #5cc2d
  
• What is an EM spectrum?
  
• Question #df754
  
• What is the equation for formation of dipeptide?
  
• How is the First Law of Thermodynamics expressed mathematically?
  
• Question #82bc1
  
• A voltaic cell is constructed using the following half-reactions. How do you determine the cell reaction?
  
• How is the half-life of a radioactive material useful for radioactive dating?
  
• When carbon burns in oxygen what does it form?
  
• Question #a26e6
  
• Question #da3b0
  
• How do geometric isomers occur?
  
• Question #e10d1
  
• What are the the functional groups for carbohydrates, lipids and proteins?
  
• Question #966b5
  
• How do you use the molar volume gas at STP to determine the volume (in L) of a occupied by 33.6 g of neon at STP?
  
• What is the molar mass of #AuCI_3#?
  
• What is one similarity and one difference between elements of group 2 and group 7?
  
• How does dipole moment affect acidity?
  
• Question #a2c32
  
• Question #290b4
  
• Question #02b88
  
• How are limericks punctuated?
  
• What are the excretory system organs?
  
• How is oxygen generated in photosynthesis?
  
• What elements other than carbon are found in compounds in plants?
  
• Why would #NaHO_4(s)# in solution turn red litmas paper blue?
  
• What is denitrification?
  
• A monochromatic beam of light has a frequency of #6.5 times 10^14# hertz. What color is the light?
  
• Question #fab79
  
• Question #1be6d
  
• Question #f444a
  
• Question #4b784
  
• Question #ccc1e
  
• The sodium atom contains 11 electrons, 11 protons, and 12 neutrons. What is the mass number of sodium?
  
• What happens when a given amount of gas at a constant temperature increases in volume?
  
• Question #089c7
  
• How do you balance #Na C l \rightarrow N a + C l _ { 2}#?
  
• What are some uses for microwave radiation?
  
• Question #10b17
  
• How do you balance #H_2SO_4 + B(OH)_3 -> B_2(SO_4)_3 + H_2O#?
  
• Question #ab094
  
• What channels in the presynaptic neuron open up in response to an action potential?
  
• How do you balance the equation for this reaction: #C(s) +SO_2(g) -> CS_2(l) + CO_2(g)#?
  
• How does the length of time it takes for a reaction to occur relate to the rate of the reaction?
  
• The reaction of charcoal (carbon) and oxygen is sped up by grinding the charcoal into a fine powder. This is an example of?
  
• Question #21464
  
• In order for a pi bond to form, what must there be?
  
• What is a chemical bond that involves somewhat unequal sharing of electrons called?
  
• What is a bond between a metal and a nonmetal?
  
• According to kinetic molecular theory, what effect do collisions between gas particles in a sample of an ideal gas have?
  
• Why is a diamond different from other non-metals?
  
• Question #ac708
  
• Question #bb038