Questions asked by Diamond W.

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• When an object is placed 8cm from a convex lens, an image is captured on a screen at 4com from the lens. Now the lens is moved along its principal axis while the object and the screen are kept fixed. Where the lens should be moved to obtain another clear?
  
• Rust is a reddish brown solid with the chemical formula Fe2O3 · nH2O. To determine the number of molecules of water of crystallization in a formula unit of a rust sample, 40.0 cm3 of 1.5M hydrochloric acid was added to 1.89 g of.... (Details below)?
  
• Titration problem?
  
• Heat Transfer Problem?
  
• Organelles problems?
  
• Eukaryotic cells and Prokaryotic cells' organelles problem?
  
• How do you identify vacuole from a microscopic image of plant cells?
  
• Will some red pigment be drawn out from the beetroot cells when there is a net gain of water during osmosis? Why?
  
• Mole calculation problem? (Details below)