Each element in a given compound comprises a fixed fraction or perfecnt by

According to law of definite composition, a chemical compound is always made up of elements in same ratio by mass or a compound always have a fixed composition.  For example, in water H_{2}O there is always 1 atom of oxygen with mass 16 g/mol and 2 atoms of hydrogen with mass 1 g/mol each.  It has application for both molecular and ionic compounds.  

Thus, each element in a given compound comprises a fixed fraction or percent by mass.

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

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