Answers created by kai

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• The density of gold is 19.3 g/cm3 and that of platinum is 21.4 g/cm3. What of the following weighs more: A rectangle of gold measuring 2.00 cm x 1.00 cm x 4.00 cm or a rectangle of platinum measuring 0.045 ft x 0.095 ft x 0.065 ft?
  
• An ideal gas in a sealed container has an initial volume of 2.35 L. At constant pressure, it is cooled to to 18°C where its final volume is 1.75 L. What was the initial temperature?
  
• Why can a disjoint event not be independent?
  
• Question #99793
  
• Ok I know this is easy for you guys, so that's why I have them all in one spot. But that's fine if you don't know the answer for one. Thanks!?!
  
• What does a nonpolar covalent bond show about the electronegativities of its two atoms?
  
• Question #b432f
  
• Question #08059
  
• How much heat is added if .617g of water is increased in temperature by .241 degrees C?
  
• What is the period and group of this atom?
  
• The relative atomic masses of nickel cobalt, iron are 58.70, 58.9332, and 55.847, respectively, which element has the greatest mass? The least mass?
  
• What is a column of the Periodic Table called?
  
• Referring to the following information, if a 0.1593 gram sample of sodium carbonate, #Na_2CO_3# requires 31.45 mL of #HCl# solution for complete neutralization, what is the precise concentration of the acid?
  
• Question #5203b
  
• How much amount of heat is required to convert 1 kg of ice at -10 degrees C into steam at 100 degrees C at normal pressure?