Recent content by Jasoni22

  1. J

    Calculate the amount to bring down the pH

    I decided to make it hard on myself and take the mass of NaOH into account and ended up with 1084 mol NaOH, so Mesa's numbers look good.
  2. J

    Calculate the amount to bring down the pH

    It sure is. First thing I would do is calculate the molarity of the NaOH solution. From there, figuring out the rest is fairly simple, especially since NaOH and H2SO4 are strong bases/acids.
  3. J

    Cracking of hydrocarbons and boiling point of salt water

    I was assuming that the distillation was of hydrocarbons mixed in water, since you wouldn't perform fractional distillation of mere salt water with nothing else in it.
  4. J

    Cracking of hydrocarbons and boiling point of salt water

    Alkenes can be cracked as well. An example would be cracking butene to yield propene and ethene. As for distillation, when you combine two immiscible liquids (such as water and alkanes/alkenes), the total vapor pressure of the mixture is the sum of the vapor pressures of the different liquids...
  5. J

    Enthelpy change for chemical reaction

    Since it tells you that ΔH=-98kJ/mol, the decomposition of 2 moles of hydrogen peroxide has ΔH=-196kJ.
  6. J

    Giving the IUPAC name for Al2(Cr2O7)3 ?

    1. Since we know sulfur is in a -2 oxidation state, that means arsenic is +3. So you could call it either arsenic trisulfide or arsenic (III) trisulfide. 2. Aluminum is always +3, and dichromate is always -2, so the name is aluminum dichromate.
  7. J

    Is the Correct Core Notation for Ag+1 Kr 4d10?

    Yes. That way you have an empty 5s subshell and a full 4d subshell, which is energetically favorable compared to a half-full 5s and a partially-full 4d.
  8. J

    Calculate displacement when acceleration is dependent on displacement?

    I really have no idea where to start with this. I have a=\frac{2.071\cdot10^{11}A}{mx^{2}} m/s2, where A and m are constants. Since the acceleration is dependent on position, and the position is obviously dependent on acceleration, I don't know how to separate the two in order to do any...
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