Newest questions posted by chemdummy
  1. chem

    What relationship exists between H^+ ion concentration and OH^- ion concentration? Waht is the OH^- concentration of an aqueous solution with the H^+ concentration of 10^-4M. Calculate the pOH? Need help with this pls. thank you.
  2. chem

    On the average; glucose (C6H1206) makes up about 0.100% by weight of human blood. How much glucose is there in 1.00 kg of blood?
  3. chem

    how to prepare 300ml of .250M HCl from a 1.00 M HCl stock solution
  4. chem

    You have a large amount of 7.50M stock solution. You need 1.80L of 3.00M solution for an experiment. How would you prepare the desired solution without wasting any stock solution?
  5. chem

    A very flexible helium-filled balloon is released from the ground into the air at 20degree C The initial volume of the balloon is 5.00L , and the pressure is 760mmHg. . The balloon ascends to an altitude of 20Km , where the pressure is 76.0mmHg and the


Newest responses posted by chemdummy
  1. chem

    sorry but it should be -50 degree C i typed it wrong
  2. chemistry

    thanks DrBob222 for the answer kindly teach me what does sum coefficient mean and how to get it based from this problem