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How many milliliters of 12.0 M hydrochloric acid (
HCl
) is required to prepare 0.75 L of a 0.25 M solution of
HCl
?
How do you solve
4x^2=9x
?
How do you factor
5a - 20
?
How do you prove
(cosx)(cscx)(tanx)=1
?
What does STP in chemistry stand for?