Modern atomic theory is, of course, a little more involved than Dalton's theory but the essence of Dalton's theory remains valid. Today we know that atoms can be destroyed via nuclear reactions but not by chemical reactions. Also, there are different kinds of atoms (differing by their masses) within an element that are known as "isotopes", but isotopes of an element have the same chemical properties.
Many heretofore unexplained chemical phenomena were quickly explained by Dalton with his theory. Dalton's theory quickly became the theoretical foundation in chemistry.
Answer: The value of 
is 0.0057
Explanation:
Initial moles of 
= 0.900 mole
Volume of container = 2.00 L
Initial concentration of 
equilibrium concentration of 
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The given balanced equilibrium reaction is,
Initial conc. 0.450 M 0 0
At eqm. conc. (0.450 -2x) M (2x) M (x) M
The expression for equilibrium constant for this reaction will be,
![K_c=\frac{[O_2][SO_2]^2}{[SO_3]^2}](https://tex.z-dn.net/?f=K_c%3D%5Cfrac%7B%5BO_2%5D%5BSO_2%5D%5E2%7D%7B%5BSO_3%5D%5E2%7D)
we are given : x = 0.055
Now put all the given values in this expression, we get :
Thus the value of the equilibrium constant is 0.0057
Answer:
its average per average is 0.5
Explanation:
when 2 average is 1 and 1 average is0.5
Elements :)
>>On the periodic table of elements
Answer:
Calcium (Ca) is in group 2 and period 4 on the periodic table be because Calcium has 2 valence electrons and 4 electron shell. Thus, calcium is a metal like all other group 2 element.
Explanation:
