Calculate the pH for each H+ concentration. [H+] = 1 x 10-8 M
pH =
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[H+] = 0.001 M
pH
[H+] = 1 x 10-12 M
pH =

Check the correct box to describe the periodic trends in electronegativity. electronegativity across a period: decreases. increases. electronegativity down a group: decreases. increases.

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Achemical reaction is done in the setup shown, resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?