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  • markosheehan's Avatar
    April 22nd, 2017, 11:13
    markosheehan replied to a thread collision in Other Topics
    i have worked out the first part the second part of the question is show that as a result of the collision the kinetic energy lost by the sphere of...
    1 replies | 83 view(s)
  • markosheehan's Avatar
    April 21st, 2017, 09:40
    markosheehan replied to a thread Mass of oxygen in Other Topics
    sorry i forgot to mention it was calculate the mass of 78 cm3 of oxygen produced by the the composition of hydrogen peroxide. h202 goes to h20 +.5o2...
    6 replies | 122 view(s)
  • markosheehan's Avatar
    April 21st, 2017, 03:21
    markosheehan replied to a thread Mass of oxygen in Other Topics
    Thanks. I feel the answer is wrong. 78/24000 32 is what gives the answer at the back of the book. Should it not be multiplied by 16 though because...
    6 replies | 122 view(s)
  • markosheehan's Avatar
    April 20th, 2017, 16:12
    markosheehan started a thread collision in Other Topics
    Two smooth spheres of masses km and m collide obliquely. the sphere of mass m is brought to rest by the impact. the coefficient of restitution for...
    1 replies | 83 view(s)
  • markosheehan's Avatar
    April 20th, 2017, 16:10
    markosheehan replied to a thread Mass of oxygen in Other Topics
    Im sorry I am still confused. I know the right answer is .104g
    6 replies | 122 view(s)
  • markosheehan's Avatar
    April 20th, 2017, 08:36
    Calculate the mass of 78 cm3 of oxygen at room temperature and pressure . Im trying to work out the number of moles and then multiply by 32.
    6 replies | 122 view(s)
  • markosheehan's Avatar
    April 20th, 2017, 08:30
    Thanks
    2 replies | 79 view(s)
  • markosheehan's Avatar
    April 18th, 2017, 15:35
    Why is ethanol less dense than water if ethanol has a larger molecular weight. I think i heard it's something to do with water molecules being closer...
    2 replies | 79 view(s)
  • markosheehan's Avatar
    April 1st, 2017, 16:31
    write down 2 equations to show how the HSO4^-1 ion can behave as a arrhenius acid and bronsted lowry base i know if its a arrhenius acid it...
    1 replies | 109 view(s)
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April 20th, 2017


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