Created by StemPy LabTwo hydrogen atoms approach each other. The potential energy of the pair falls to a minimum at , where attraction and repulsion balance, and a molecule forms. NCERT gives as the energy released when one mole of forms this way. How much energy is released when one molecule forms? Take .
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← A student writes six statements about dipole moments. (i) SF₄ has zero dipole moment, because its four S-F bond dipoles cancel. (ii) BF₃ has zero dipole moment, although each B-F bond is polar. (iii) CCl₄ has zero dipole moment, but CHCl₃ does not. (iv) In the crossed arrow for a bond dipole, the cross is at the negative end. (v) 1 D equals 3.33564 × 10⁻³⁰ C m. (vi) CO₂ has zero dipole moment, but H₂O does not. How many of these statements are correct?A syringe holds 40.0 mL of a gaseous element X₂. A student pushes in a second gaseous element, Y₂, a little at a time. The two react completely to give one gaseous product, and she records the total volume of gas after each step. All volumes are at the same temperature and pressure. The figure shows her results. What is the formula of the product, and what volume of it is present after 60 mL of Y₂ has been added? →
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