Elucidation of the structure of the periodic table The number of electron shells an atom determines the atomic period. Each skin has a subshell, which is loaded according to the following sequence, along with increasing atomic number: 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s 5f 6d 8s 5g 6f 7d 7P 8p
Senin, 24 Oktober 2011
Molality is another common measurement of concentration. Molality is defined as moles of solute divided by kilograms of solvent (the substance in which it is dissolved, like water).
Molality =
moles of solute
kg of solvent
Molality is sometimes used in place of molarity at extreme temperatures because the volume can contract or expand.
Langganan:
Posting Komentar (Atom)
If the molality of a solution of C2H5OH dissolved in water is 1.5 and the mass of the water is 11.7 kg, figure out how much C2H5OH must have been added in grams to the solution.
BalasHapus