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What's the answers to my math test? Can someone please help me with this? Balance the following in basic solution: BrO3^1- + F2 —> BrO4^1- + F^-? Which devices represent a practical application of the photoelectric effect?:
a. both choices
b. hologram
c. photocell
d. all wrong? How much time (in seconds) does it take light to travel 1.70 billion km? How can I find the max area of a quadrilateral with given perimeter of 3 sides?