Did Lister test his assumption that mold could kill bacteria on human subjects? No, that would have been illegal.

No, he could not find any willing test subjects.

Yes, a nurse with whom he worked had a bacterial infection on her arm; when he applied a salve containing the mold spores, the infection became much worse

Yes, a nurse with whom he worked had a bacterial infection on her arm; when he applied a salve containing the mold spores, the infection resolved.

56 moles of   lieter in chemistry

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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~ trueboss72

intermolecular forces are the forces between molecules or particles.

there are two kinds of van der waals forces: weak london dispersion forces and stronger dipole-dipole forces.

in molecule of water there are dipole-dipole forces between negatively charged oxygen from one molecule of water and positively charger hydrogen of another molecule of water.

hydrogen bond is an electrostatic attraction between two polar groups that occurs when a hydrogen atom (h), covalently bound to a highly electronegative atom such as flourine (f), oxygen (o) and nitrogen (n) atoms.