Thanks Steve.
Any ideas for these?
A Tums tablet (which some people take to boost their calcium intake) contains 500. mg calcium carbonate. An article on diet warns: "Always read the label to make sure you're not getting more carbonate than elemental calcium." Are you? Is there anything you can do about it? Explain your answers.
A newspaper columnist wrote the following explanation of why baseball players hit more home runs during hot, humid weather than during cool, dry weather: "Hot air molecules are bigger than cold air molecules so there's less friction."
(1) Why might the reporter think hot air molecules are bigger than cold ones?
(2) The right answer to why baseballs go farther in humid weather involves density, but is it possible to argue this just using partial pressure? Explain whether you can or cannot.
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