3. What is the average atomic mass for the element hydrogen, H? The
proportion of the stable isotopes
found in the environment is shown
below.
Isotope
1H
2Η
1
1
Percent
abundance
91.75%5.85%

explanation: no but i do not usually comment

the atomic number will stay the same no matter how many electrons it has, so it doesn’t decrease nor increase. it’ll only change with a different number of protons

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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