Questions asked by Shanice S.

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• The density of aluminium is 2700kg/m^-3.calculate the mass of a block of aluminium which has a volume of 100cm3?
  
• Cork has a relative density of 0.25. What is the the volume in cubic centimeters of 50g of cork ? Take the density to be 1000 kg/m^3.
  
• What is the force exerted by the atmosphere on a pool of water that is 30 m long and 10 m wide, the the atmospheric pressure is 100 K Pa ?
  
• A circular piston exerts a pressure of 80 k Pa on a fluid, when the force applied to the piston is 0.2kN. What is the diameter of the piston ?
  
• What is the absolute pressure at a point on a submarine, at a depth of 30 m below the surface of the sea, when the atmospheric pressure is 101 k Pa ? Take the density of sea water as 1030 kg m^-3 and the gravitational acceleration as 9.8 ms^-2
  
• How do you convert #300# #ml# to #m^3#?
  
• How do you convert 30ml^3 to m^3 ?
  
• How many moles are there in 20mL of vinegar?
  
• What is the specific heat capacity of aluminum in joules? And how do you find it?
  
• Draw the graph as follows?
  
• Plot the following?
  
• Plot the following?
  
• Plot the following?
  
• Plot the following?
  
• What is shear force with examples?
  
• Would you expect catalase inactivated under normal blanching conditions for potatoes? Why of why not?
  
• Are there other ways, besides heat, of controlling enzymatic activity? Give an example.
  
• Plot the following?
  
• Plot the following?
  
• Plot the following?
  
• Plot the following?
  
• Balance the following equation? Ca(OH)2 (s) + (NH4)2 SO4 (s) → CaSO4 (s) + H2 O (l) + NH3 (g)
  
• Could someone explain the idea of derivatives in the simplest way possible to me with examples, please?