Answers edited by Solace M.

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• What was Dmitri Mendeleev's major contribution to the field of chemistry?
  
• How can some manganese oxides be acidic and some basic?
  
• How are gastrointestinal problems cured?
  
• What evidence is there for abiogenesis?
  
• What are two compounds that are made up of molecules?
  
• What are three methods used to help control invasive species?
  
• Question #ef40b
  
• What is the law of large numbers in economics?
  
• Question #d1d51
  
• Question #69f2a
  
• Why are lakes and oceans are able to stabilize air and land temperatures?
  
• What is the formula of dinitrogen pentoxide?
  
• Shaun White won the gold medal with a score of 46.80, what is the corresponding z-score?
  
• Why is lattice energy considered to be potential energy?
  
• Question #22638
  
• Marta deposits $15,000 in an account with 7% interest, compounded annually. How much will Marta's account balance be after 15 years?
  
• What is a rhyme scheme called when the poem only rhymes in the beginning?
  
• With the word Quicker, how many ways can we arrange the letters if U and I can't be together?
  
• In which acid can dissolve AgCl?
  
• How do you find the standard deviation for the numbers 4, 4, 5, 5, 6, 6?
  
• What type of electromagnetic energy is invisible to the human eye?
  
• Help with Q6? "A boat travels north for 6km, west for 3km, then south for 2km. What is the boat's true bearing from its starting point? Give your answer to one decimal place.
  
• Question #bed84
  
• What organelles are found in all Eukaryotic cells?
  
• Question #edca3
  
• The mean of a set of data is 4.11 and its standard deviation is 3.03. What is the z-score for a value of 10.86?
  
• How can you determine the electron configuration without a periodic table?
  
• Is it possible to "move" space, rather than a space vehicle, to make the vehicle travel faster?
  
• What information can you represent with a box and whisker plot?
  
• Question #50172
  
• Is the sample mean equal to the population mean?
  
• The heights of a certain group of adult parrots were found to be normally distributed. The mean height is 36 cm with a standard deviation of 7 cm. In a group of 1200 of these birds, how many would be more than 29 cm tall?
  
• Question #e8469
  
• Question #3cd19
  
• The position of uncertainty of an electron is 1.89 x 10 -14 m/ What is the uncertainity of velocity? thank you so much.
  
• How can some manganese oxides be acidic and some basic?
  
• Crystalline sodium nitride is heated until it decomposes. What type of reaction is this?
  
• What are the grams of sodium chloride produced when 10.0 g of sodium react with 10.0 g of chlorine gas in the equation #2Na+Cl_2 -> 2NaCl#?
  
• What are some advantages and disadvantages of Michelson Interferometer?
  
• Question #47e74
  
• Question #355ed
  
• Why do voltaic cells with magnesium as the annode have such high percent differences?
  
• Question #3c669