A sample of human blood was tested and found to have a pH of 7.43. Calculate [H3O+] and [OH-].

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One mole of zinc has a mass of 65.4 grams. approximately how many atoms of zinc are present in one mole of zinc? 32 × 1023 atoms 6 × 1023 atoms 66 atoms 65 atoms

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

The organs inside the body and how they function together