Answers created by JFR Chemistry

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• Why do you have to use moles when solving stoichiometry problems instead of just converting from grams to grams?
  
• I am on an online Chem lab. One of our questions is "can you use a beaker to prepare a solution by dilution, instead of using a volumetric flask? Why or why not?" We watched a video but it doesn't give help to this question at all.
  
• What electron configuration represents an excited state?
  
• Why can covalent compounds conduct electricity?
  
• Strontium consists of four isotopes with masses of 84 (abundance 0.50%), 86 (abundance of 9.9%), 87 (abundance of 7.0%), and 88 (abundance of 82.6%). What is the atomic mass of strontium?
  
• Why do polyatomic ions have a charge?
  
• What is the freezing point depression?
  
• How does a solution differ from a heterogeneous mixture?
  
• How can I identify a strong base?
  
• How can I identify alkenes?
  
• Question #6e52b
  
• How can I calculate the rates and order in the following reaction? H2 + I2 = 2 HI
  
• Question #b5931