Answers edited by Solace M.

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• What was Dmitri Mendeleev's major contribution to the field of chemistry?
  
• Question #edca3
  
• The position of uncertainty of an electron is 1.89 x 10 -14 m/ What is the uncertainity of velocity? thank you so much.
  
• In which acid can dissolve AgCl?
  
• What information can you represent with a box and whisker plot?
  
• 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.
  
• 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?
  
• Why is lattice energy considered to be potential energy?
  
• How do you find the standard deviation for the numbers 4, 4, 5, 5, 6, 6?
  
• 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 three methods used to help control invasive species?
  
• Question #69f2a
  
• How can you determine the electron configuration without a periodic table?
  
• What type of electromagnetic energy is invisible to the human eye?
  
• What are two compounds that are made up of molecules?
  
• Crystalline sodium nitride is heated until it decomposes. What type of reaction is this?
  
• Question #d1d51
  
• How are gastrointestinal problems cured?
  
• What evidence is there for abiogenesis?
  
• 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?
  
• Why do voltaic cells with magnesium as the annode have such high percent differences?
  
• Shaun White won the gold medal with a score of 46.80, what is the corresponding z-score?
  
• Is it possible to "move" space, rather than a space vehicle, to make the vehicle travel faster?
  
• Why are lakes and oceans are able to stabilize air and land temperatures?
  
• Question #50172
  
• What are some advantages and disadvantages of Michelson Interferometer?
  
• Question #3c669
  
• What organelles are found in all Eukaryotic cells?
  
• Question #22638
  
• Question #bed84
  
• Question #355ed
  
• Question #ef40b
  
• Marta deposits $15,000 in an account with 7% interest, compounded annually. How much will Marta's account balance be after 15 years?
  
• With the word Quicker, how many ways can we arrange the letters if U and I can't be together?
  
• Question #3cd19
  
• What is the law of large numbers in economics?
  
• What is a rhyme scheme called when the poem only rhymes in the beginning?
  
• What is the formula of dinitrogen pentoxide?
  
• Question #e8469
  
• How can some manganese oxides be acidic and some basic?
  
• Question #47e74
  
• Is the sample mean equal to the population mean?
  
• How can some manganese oxides be acidic and some basic?