Which of the following shows concentration of a solution? * A Grams of solute.
B Liters of the solution.
C Moles of solute per liter solution
D Moles of solvent.​

Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

Sodium nitrite (nano2) reacted with 2−iodooctane to give a mixture of two constitutionally isomeric compounds of molecular formula c8h17no2 in a combined yield of 88%. draw reasonable structures for these two isomers. click the "draw structure" button to launch the drawing utility. place the two compounds in the appropriate boxes below.