Discs carrying 10-fold serial dilutions of antibiotic are placed on a lawn of bacteria to find the lowest concentration that will inhibit growth of the bacteria. bacterial growth appeared up the edge of the first (1/10) and second dilution disc (1/100), but a 20-mm zone of clearance appeared around the third dilution disc (1/1,000). if resistance is defined as no zone of clearance, what is the resistance titer of the antibiotic for this organism?

How many neutrons does an element have if its atomic number is 50 and its mass number is 166

The molecular weight of carbon dioxide, co2, is 44.00 amu, and the molecular weight of nitrous dioxide, no2, is 46.01 amu, so no2 diffuses co2

Match the vocabulary terms to their definitions. 1 . a long, chain-like set of molecules made up of repeating units joined end to end polymer 2 . a hard, brittle, heat- and corrosion-resistant material made by subjecting a nonmetallic mineral mixture to intense heat ceramic 3 . a plastic with low elongations that cannot be recycled thermoset 4 . a carbon fiber embedded in a polymer resin matrix thermoplastic 5 . a plastic with high elongations that can be recycled crystal 6 . a solid form resulting from the arrangement of atoms, ions, or molecules in definite geometric patterns composite