Answers edited by Diego Martínez Paz

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• Assuming #"Ba"("OH")_2# dissociates completely, what is the #"pH"# of #"0.015 M"# #"Ba"("OH")_2# to three sig figs?
  
• What is the explanation for why a higher temperature makes a reaction go faster?
  
• Question #d5076
  
• A boy spent one-half of his money for a book and one-third of his money for a pen. The remaining $2.25 he saved. How much money did he have originally?
  
• When did chaotic leadership and lack of unification leave Egypt vulnerable to invaders?
  
• What made the rings of Saturn?
  
• Where is intracluster medium found?
  
• What is responsible for the saltiness of ocean water?
  
• A 3 kg mass is moving with an initial velocity of 10 m/s. The mass collides with a 5 kg mass, which is initially at rest. What is the final velocity of the masses after the collision if it is perfectly inelastic?
  
• Why does the universe expand?
  
• What is the difference between open clusters and globular clusters?
  
• ```why does red light travel faster than violet light , though violet light has more energy (in glass)? plz give a simple answer which can be understood by a 10th class student.
  
• What happens in Earth's interior to produce Earth's magnetic field?
  
• Why is #"phenyl sulfonic acid"# a STRONGER acid than #"benzoic acid"#?
  
• How did Great Britain get involved in WWI?
  
• What is the spectroscopic method of analysis?
  
• What type of fossil are most dinosaur remains?
  
• Question #68dd1
  
• Who built the Panama Canal and why did they do it?
  
• Question #18716
  
• Question #a7fd3
  
• What happens to your cells if you drink saltwater?
  
• Who were the allies in World War II?
  
• How do you balance #CaCO_3 + H_3PO_4 -> Ca_3(PO_4)_2 + CO_2 + H_2O#?
  
• Can someone please solve this three questions for me. Thank you for your help. (1)- in an experiment, 5g of copper was heated with excess sulphur yield 3g of copper (1)sulphide. what is the percentage yield?
  
• Why would a climax community such as oak woodland have a higher species diversity?
  
• Question #3d262
  
• Why can't we stop methane from leaking?
  
• If we bury organic matter deep enough, would it produce fossil fuels?
  
• How do you add #4\frac { 1} { 4} + 12\frac { 11} { 12}#?
  
• How do stars form from the remains of supernova?
  
• Radioactive iodine therapy is a treatment for a problem with which gland?
  
• Question #3206f
  
• What defines a planet's orbit?
  
• Question #956d1
  
• How can the body lose heat?
  
• Why is time on earth and time in space different?
  
• What causes magnetic reconnection?
  
• Question #4808f
  
• Question #9e27c
  
• What is the difference between metabolism and metabolic rate?
  
• Question #a6c0b
  
• What substances conduct electricity by the movement of ions?
  
• How does deforestation contribute to the greenhouse effect?
  
• Which of the following organisms is not a Cnidarian: box jelly, hydrozoa, sea anemone, sea cucumber?
  
• How did Iron come to earth (millions of years ago)?
  
• Why is time on earth and time in space different?
  
• Why is it necessary to add a question mark in your question? Some problems require a full stop instead of a question mark.
  
• How long does it take for blood to multiply? I have low blood levels and right now I am taking iron pills 4 times a day. How quickly will my blood cells multiply? How much do blood cells make?
  
• How many minerals are common in Earth's crust?
  
• What different shapes can galaxies have?
  
• Question #79875
  
• Who founded astrobiology? Who are some other major astrobiologists?
  
• How does the strength of an acid relate to pH?
  
• Question #51dbc
  
• Why light can't escape from a blackhole if they have no mass?
  
• Where does the melting occur that forms metamorphic rocks?
  
• Under standard conditions, which element is MOST dense: lithium; hydrogen; osmium; and bismuth?
  
• Write the characteristics of animals?
  
• How do you write 0.72 as a percent?
  
• How does cellular respiration affect homeostasis?
  
• Question #29853
  
• What is a defense against invading organisms in the respiratory tract?
  
• What is the main basic structure of the dermis?
  
• What is dark matter?
  
• Question #235d8
  
• How are containment booms used?
  
• How do dipoles make a metal magnetic?
  
• Energy is neither created nor destroyed but can be changed from one form to another.Then light energy is transformed to which form?
  
• When a spinning star shrinks in radius, it speeds up. Why does this happen?
  
• How could you control the amount of carbon dioxide a plant gets?