Cumulative exam
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how much dia sample remains after five half-lives have occurred?
5 of the ongenal sample
25 of the ongnal sample
132 of the ongnal sample
54 of the orginal sample

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp

The semi-conductors on the periodic table are classified as