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OpenStudy (anonymous):
Prior to using a triple beam balance, it is necessary to
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OpenStudy (anonymous):
are there any choices
OpenStudy (anonymous):
A. make sure that the balance is calibrated to zero. B. make sure that the riders are all set to zero. C. make sure that the pan is clean and dry. D. all of these
OpenStudy (anonymous):
d. all of these
OpenStudy (anonymous):
thanks
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