Answers edited by David Drayer

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• Which of these are results of physical changes?
  
• What is the mass of #6.12xx10^21# molecules of #"HCl"#?
  
• What landmark Supreme Court case finally overturned the ruling in Plessy v. Ferguson?
  
• What did the Three-Fifths Compromise do?
  
• How do you evaluate #(- 7) ^ { 2} \div ( - 3- - 10) ^ { 2}#?
  
• In general, how did life for rural Americans differ from life for urban Americans?
  
• Question #11931
  
• How do you find the GCF of 12 and 18?
  
• Why is it important for plants that carbon dioxide uptake at day should be greater then the release of carbon dioxide during night?
  
• Question #efa5d
  
• Why was Petersburg so important to the Confederate capital, Richmond?
  
• What was one of the earliest attempts to put an end to trusts and monopolies?
  
• If you were in charge of the Roman empire, how would you prevent it from collapsing?
  
• How do you evaluate #7- 4[ 8- 7( 2- 3) ]#?
  
• How do you solve #x+ \frac { - 3} { x } = 2#?
  
• Question #168fc
  
• How can water change state?
  
• How do you multiply #(6p+7)/(p+2)div(36p^2-49)#?
  
• A section of one DNA strand has the sequence ACCGAGGTT. What is the sequence of an mRNA transcribed from this section of DNA?
  
• Did humans evolve from apes? Or is this simply a myth?
  
• How does the number of valence electrons change as you look down a column of the table?
  
• How does the red shift of distant galaxies indicate that the universe is expanding?
  
• Question #bcb76
  
• From what country did most of the workers who built the Transcontinental Railroad come?
  
• Question #ff02f
  
• Question #5489f
  
• What happens when you combine silver nitrate with sodium chloride?
  
• What solution did the international community come up with to handle the large number of homeless Jewish refugees following World War II?
  
• Marcie jogged 0.8 mile on Wednesday and 0.9 mile on Thursday. How far did she jog on the two days?
  
• What were the Jim Crow laws?
  
• How do you write 4/9 as a decimal?
  
• How did slavery affect the development of the Southern economy?
  
• How did slave codes affected enslaved people?
  
• Question #9d307
  
• Question #c024f
  
• The ratio of Maya's money to Sophia is 3 : 7. Sophia has $64 more than Maya. If Sophia gives 14 of her money to Maya, what will be the new ratio?
  
• How do you solve the following linear system: #-9x - 5y = -1, 3x + y = 1 #?
  
• What was the famous battle in October of 1942 in Egypt? Who won and why?
  
• What led the Soviets to blockade West Berlin?
  
• Question #f8d72
  
• A car drove at 43 miles per hour for 7 hours. How many miles are left if the entire trip is 40O miles?
  
• Consider the Lewis structure below. What are the formal charges of each atom?
  
• Who were the Axis Powers during World War II?
  
• Question #3f24a
  
• Question #63d0f
  
• How do seismic waves affect buildings?
  
• How did religion/ views on religion begin to change after the publication of Martin Luther's 95 Theses?
  
• What is Absolute zero (or 0 Kelvin)?
  
• How do you evaluate #(- 4\frac { 1} { 2} ) - 1\frac { 1} { 3}#?
  
• What are the phase change processes taking place at equilibrium between liquid and gas phases?
  
• Question #52096
  
• Question #56886
  
• Question #6585c
  
• Question #04557
  
• What is the formula for kinetic energy?
  
• Which of the following molecules is held together primarily by ionic bonds? How do you determine this?
  
• Question #ebc54
  
• What characteristics of water contribute to the relatively constant temperatures of the oceans?
  
• The Articles of Confederation denied Congress the power to collect taxes, could a government survive today without this power?
  
• A hydrated compound has an analysis of 18.29% Ca, 32.37% Cl, and 49.34% water. What is its formula?
  
• Why might the action of the Seljuks in conquering Southwest Asia have ignited the Christian Crusades?
  
• What is the basic particle of an element?
  
• The product of a positive number, its square, and its reciprocal is #100/81#. What is the number?
  
• Ibn Battuta traded his salt with what kingdom?
  
• Is the word "scrupulous" a positive, negative, or neutral connotation? Why do you think so?
  
• What did Thomas "Stonewall" Jackson do to gain his nickname and become a noted Civil War figure?
  
• How do you solve #|7 - 6x| <= -4#?
  
• Who ran for the Senate against Stephen Douglas and had a series of debates about slavery with him?
  
• Question #87dad
  
• Question #06fc8
  
• Why did the U.S. create welfare programs?
  
• Question #7c1f8
  
• Why were the American Articles of Confederation ineffective?
  
• Question #0139f
  
• What brought American settlers into conflict with the Mexican government?
  
• Time travels faster than light. Light has a mass of 0 and according to Einstein nothing can move faster than light if it doesn't have its weight as 0. Then why does time travel faster than light?
  
• What are sp2 hybrid orbitals?
  
• During World War II, which Allied nation suffered the most military deaths?
  
• How do you solve the system of equations #3x-3y=-9# and #3x-5y=-29# by combining the equations?
  
• How do you solve #2x/3+9=-7#?
  
• Why do the tectonic plates on Earth move?
  
• How have tectonic plates affected Latin America's physical geography?
  
• What were two things that caused Americans to be fearful after World War ended?
  
• What was the turning point of World War 2?
  
• How do you write #19,000 # in standard notation?
  
• What was the condition of America's economy following World War I?
  
• Was the Invasion of Normandy a turning point ?
  
• What significance did the Grand Council, an experiment in democracy, have for the Iroquois?
  
• Question #0a663
  
• A student records the mass of a piece of iron. The iron is then left outside until it rusts. What type of reaction occurs, and how does the mass of the object after rusting compare with its original mass?
  
• Are compounds made up of molecules?
  
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