smallpox is a virus with a fatality rate of about 30%, and those that survive the disease have terrible scarring and lingering problems. edward jenner is famous for a now notorious experiment in which he developed the first vaccine for smallpox. in the experiment jenner first exposed a small boy to cowpox, which is relatively harmless. the boy got cowpox and recovered. jenner then exposed the boy to smallpox by walking him through a hospital ward. the boy lived.
which conclusion is not valid?
a) cowpox virus can be used as a vaccine against smallpox.
b) immunity to cowpox virus also grants immunity to smallpox.
c) cowpox virus and smallpox virus are probably very similar.
d) smallpox virus would be a good choice for a vaccine against cowpox.

Describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? )

Lem 2 the data below are for the system ethyl propyl ether (1)-chloroform (2) at 0.5 bar. use the data to answer the following questions (all questions refer to p d 0: 5 bar). a) what are the boiling points of the pure components at 0.5 bar? b) a mixture with the overall composition z1 d 0: 1 is brought to 47.6ä±c, 0.5 bar. what is the phase? c) 100 mole of a mixture with z1 d 0: 1 (state a) is mixed with 22 mole of pure ethyl propyl ether vapor (state b). the mixing takes place at 47.6 ä±c, 0.5. bar. what is the phase of the resulting mixture (state c)? if the state is a v/l mixture report the number of moles and mole fractions in each phase. d) plot the txy graph and show states a, b and c. the graph must be done by computer and should be properly annotated. ethyl propyl ether (1) - chloroform (2) at 0.5 bar t ( ä±c) x1 y1 t ( ä±c) x1 y1 42.9 0.000 0.000 49.0 0.470 0.455 43.0 0.020 0.010 49.1 0.520 0.520 43.9 0.065 0.029 48.9 0.567 0.592 45.4 0.156 0.089 48.3 0.652 0.720 46.4 0.215 0.142 47.6 0.745 0.815 47.6 0.296 0.223 46.7 0.822 0.872 48.3 0.362 0.302 45.7 0.907 0.937 48.7 0.410 0.375 44.6 1.000

The grooves or folds of the brain are called