Answers created by Jack Oneill

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• Find the ph of a 0.001M of NaOH solution ?
  
• Why is gas pressure zero at absolute zero?
  
• How many valence electrons are found in most atoms of the noble gases? How would you use this information to explain why the noble gases are non-reactive?
  
• Give values of n and l for an unpaired electron in cu?
  
• Which are some effects of metallic bonding?
  
• How do i solve: sinx = (cosx)^2 ?
  
• Why is ethanol able to mix with both water and gasoline (octane) but gasoline and water do not mix?
  
• In a reaction A+B -> product, rate is doubled when the concentration of B is doubled and rate increases by a factor of 8 when the concentration of both the reactants A and B are doubled, rate law for the reaction can be written as?
  
• A company ordered 10 boxed lunches from a deli for $74.50. Each boxed lunch cost the same amount. Which equation represents the proportional relationship between y, the total cost of the boxed lunches, and x, the number of boxed lunches?
  
• Solve for x? 3(2x-2)=2(x+1)
  
• How do you draw the electron configuration of nitrogen?
  
• What is molarity?
  
• How do you solve this equation?
  
• How does ionic radius change within a group of metals?
  
• 38 is what percent of 56?
  
• Which is the larger change in temperature, 1K or 1 degree C?
  
• How does pH change when a strong acid is titrated with a strong alkali?
  
• The maximum number of orbitals that can be assigned to the n=4 shell is?
  
• Is 2Na+2H2O=2NaOH+H2 a redox reaction?
  
• The distance from the earth to the sun is #150,000,000,000 m# How is this written in scientific notation?
  
• The area of a square is 17 square inches. What is the correct length of one side?
  
• How do you solve #m- 3= \frac { 4} { 6} m - 2#?
  
• Marlin Davies buys a truck for $28,000. In three years, the car depreciates 47% in value. How much is the car worth in three years?
  
• Driving down a mountain, Tom finds that he has descended 1800 ft in elevation by the time he is 3.25 mi horizontally away from the top of the mountain. How do you find the slope?
  
• Question #0dd5a
  
• Question #4132a
  
• Steve wants to make a triangular pyramid with 4 faces. He takes 4 isosceles triangles and tapes them together. Each triangle is 4 inches wide at the bottom. The altitude of each triangle is 9 inches. What is the total area of the 4 triangular faces?
  
• How do you write the answer in scientific notation given #(8.4times10^-6)/(2.4times10^9)#?
  
• How do you solve #x(x+6)=-15# using the quadratic formula?
  
• One fifth of a meter equals what ?
  
• Question #1a8c8
  
• Question #bbbc7
  
• What do scientists use to predict the locations of electrons in atoms?
  
• Which two of the first thirty-six elements would you expect to from bond with the hreatest ionic character? Write the electronic configuration(s,p) for the ions involved?
  
• Which would melt first, germanium with a melting point of 1210 K or gold with a melting point of 1064 °C?
  
• Water rushes down a river with a velocity of 2.4 m/s. Four seconds after leaving the rapids the velocity of the water has decreased to just 0.6 m/s. What is the deceleration of the water?
  
• Question #82948
  
• Which of the following energy transitions for electrons will occur when red light (650 nm) is absorbed by an atom?
  
• What happens in the reaction of copper in HCl?
  
• Question #d16ac
  
• Question #bed07
  
• How do balanced & unbalanced forces affect the velocity of an object?
  
• Does the mass of an object affect its acceleration due to gravity? Why?
  
• What causes excitation of atoms?
  
• Question #d71b2
  
• Should strontium have similar chemistry to calcium OR rubidium?
  
• Question #c2b33
  
• How does ionization energy change with atomic radius?
  
• Question #46919