Often when plates are prepared, the numbers of colonies are too numerous to count (TNTC), so scientists do tenfold dilutions and prepare agar plates. On the basis of the countable colony numbers underneath each plate, approximately how many cells were initially plated on the 10–3 dilution plate?

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ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called