Posts by Shellby

Total # Posts: 7

  1. chemistry

    How many moles are contained in 3.25 L sample of an ideal gas at 25 Celsius and 204 kPa?
  2. Chemistry

    What does it mean to have a minimun formal charge in dealing with Lewis Dot Structures?
  3. poetry

    what is the theme for Robert Frost's poem "After Apple-Picking"? My long two-pointed ladder’s sticking through a tree Toward heaven still, And there’s a barrel that I didn’t fill Beside it, and there may be two or three Apples I didn’t pick ...
  4. Chemistry

    Consider the following data: * NH3(g) yields 1/2 N2(g) + 3/2 H2(g) delta H = 46kJ * 2 H2(g) + O2(g) yields 2 H2o(g) delta H = -484 kJ Calculate delta H for the reaction: 2 N2(g) + 6 H2O (g) yields 3 O2(g) + 4 NH3(g)
  5. Chemistry

    A 100g sample of water at 90 degrees celsius is added to a 100g sample of water at 10 degrees celsius. The final temperature of the water is which of the following: a) between 50 degrees celsius and 90 degrees celsius b) 50 degrees celsius c) between 10 degrees celsius This is...
  6. Chemistry

    Consider the combustion of propane: C3H8(g)+5O2(g) yields 3CO2(g) + 4H2O(l) delta H= -2221 kJ Assume that all of the heat comes from the combustion of propane. Calculate delta H in which 5.00g of propane is burned in excess oxygen at constant pressure.
  7. Science

    Consider the combustion of propane: C3H8(g)+5O2(g) yields 3CO2(g) + 4H2O(l) delta H= -2221 kJ Assume that all of the heat comes from the combustion of propane. Calculate delta H in which 5.00g of propane is burned in excess oxygen at constant pressure.