The compound sodium thiosulfate pentahydrate, Na2S2O3.5H20, is important commercially to the pho-
tography business as "hypo," because it has the abil-
ity to dissolve unreacted silver salts from photo-
graphic film during development. Sodium thiosulfate
pentahydrate can be produced by boiling elemental
sulfur in an aqueous solution of sodium sulfite.
Sg(s) +8Na2SO3(aq) 40H2O(1) -Na2S2O3-5H2O(s)
(unbalanced)
What is the theoretical yield of sodium thiosulfate
pentahydrate when 3.25 g of sulfur is boiled with 13.1
g of sodium sulfite? Sodium thiosulfate pentahydrate
is
very
soluble in water. What is the percent yield of
the synthesis if a student doing this experiment is able
to isolate (collect) only 5.26 g of the product?

assuming that your periodic table has eighteen columns, you should highlight   the four elements in the third column from the left of the table.

neutral atoms of elements after calcium contain d electrons. the energy of d orbitals of a particular main shell lies between the energy of the s and p orbitals of the next main shell. for example, electrons in the have energy higher than those in the orbital while lower than those of the orbital.

by the aufbau principle, electrons fill orbitals one at a time, starting from those of the lowest energy. the orbital is therefore filled right after orbitals and before orbitals.  

potassium has electron configuration and calcium . the s orbital of a main shell holds a maximum of two electrons. the next element would thus have the electron configuration and satisfy the requirements.

a neutral atom of the element contains three electrons on top of the most recent noble gas element. it should thus be placed in the third column of the periodic table. both scandium and yttrium would satisfy the conditions. an aufbau diagram indicates that the 4f orbital is filled before the 5d. however, it appears that exceptions exists for both lanthanum and actinium. neutral atoms of the two d-block elements also demonstrate the and should be highlighted as well.

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.

its pwirhfpiwe

explanation:

because dgjpwojefopjwp