Recent content by IntegrateMe

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    Show, using directional arrows, which transition corresponds to

    Thank you again!
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    Show, using directional arrows, which transition corresponds to

    This is a 3 part problem, and I pulled the wavelengths directly from the printed text on the page. Just double checked and their right. Well, if the energy ratio is ~1.6:1, that means the blue arrow should be ~0.6*yellow arrow. So that small gap is supposed to represent the 0.6, which means we...
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    Show, using directional arrows, which transition corresponds to

    So the blue arrow should be 1.5 times the length of the yellow arrow? So I would draw blue from 3 to 1 and yellow from 1.5 to 1?
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    Show, using directional arrows, which transition corresponds to

    Sorry, let's say the wavelengths of the yellow and blue lights, respectively, are: 610 nm and 390 nm How would I determine where the arrows are drawn using the ratio of these numbers?
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    Show, using directional arrows, which transition corresponds to

    Thank you!
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    Show, using directional arrows, which transition corresponds to

    Yes, I know blue light has more energy than yellow light. Does that mean that for blue light, the arrow would be drawn from 3 to 1, and for yellow light from 2 to 1?
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    Show, using directional arrows, which transition corresponds to

    Show, using directional arrows, which transition corresponds to... An energy level diagram is provided. Show, using directional arrows, which transition corresponds to the yellow light and which transition corresponds to the blue light. http://i.imgur.com/Dv670.jpg?1 I'm not really sure...
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    Can someone explain why this dissolution is exothermic rather than endothermic?

    A pair of students found the temperature of 100 g of water to be 27.0°C. They then dissolved 6.32 g of KOH in the water. When the salt had dissolved, the temperature of the water was 42.5°C. If the temperature of the water is raised, doesn't that mean it retained heat, thus showing that the...
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    Finding pH using ICE chart/quadratic formula on the last step

    Calculate the pH of a 0.0253 M aq solution of a monoprotic acid. The Ka for the acid is 1.79 x 10-2 So a monoprotic acid will have the form HA --> H + A, correct? I 0.0253 0 0 C -x x x E (0.0253-x) x x EDIT: I just realized the...
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    Find the [H3O+], [OH‐], pH, and pOH

    There are 2 moles of OH- in Sr(OH)2. Why do we multiple this 0.1475 M solution by the number of moles of one part of the reaction, though?
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    Find the [H3O+], [OH‐], pH, and pOH

    Seriously, why can't ANYBODY help me? I figured the problem was relatively easy, am I asking in the wrong way?
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    Find the [H3O+], [OH‐], pH, and pOH

    The book shows that the concentration of OH is 2(.1475M), but I'm not sure how that was obtained. I understand that there are 2 hydroxide ions, but why do we use the moles of the solution?
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    Find the [H3O+], [OH‐], pH, and pOH

    A solution is prepared to be 0.1475 M in Sr(OH)2. Find the [H3O+], [OH‐], pH, and pOH. I'm not quite sure where to go from here. I was thinking I can start by writing out the net ionic equation: Sr(OH)2 → Sr2+ + 2OH- But I don't really know how that helps me. Any insights?
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    What is the mass of a liter of solution?

    Can someone explain why the solution weighs 1011 g? If I have 1000 g of solvent and 20.35 g of solute, why isn't the weight 1020.35?
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    What is the mass of a liter of solution?

    Ah, chemisttree, you were right. Molality and molarity -__- Thank you!