Questions asked by Dani

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• How does a catalyst make Hydrogen Peroxide's decomposition quicker? What is actually happening?
  
• If you were to produce a 3 digit multiple of 7 that has a final digital sum of 7 using the formula; 7(1+9k). How do you calculate what k is?
  
• What is the energy loss of a photon of a certain wavelength after scattering?
  
• Is the following series convergent?
  
• How do I determine if the improper integrals converge or not?
  
• How do I find the moment of inertia of a hollow cylinder?