What is one way that creativity made up for limited technology for early biologists? a) scientists created unique experiments for exploring living organisms without killing them. b) scientists personally designed the custom equipment they needed for their experiments. c) scientists were able to use their imaginations rather than experiments to answer questions. d )scientists developed advanced mathematics to compensate for limited technology.

Can someone me with questions 12 and 13 plz.

Two nitro no2 groups are chemically bonded to a patch of surface. they can't move to another location on the surface, but they can rotate (see sketch at right). it turns out that the amount of rotational kinetic energy each no2 group can have is required to be a multiple of ε, where =ε×1.010−24 j. in other words, each no2 group could have ε of rotational kinetic energy, or 2ε, or 3ε, and so forth — but it cannot have just any old amount of rotational kinetic energy. suppose the total rotational kinetic energy in this system is initially known to be 32ε. then, some heat is removed from the system, and the total rotational kinetic energy falls to 18ε. calculate the change in entropy. round your answer to 3 significant digits, and be sure it has the correct unit symbol.

How will the volume of a gas be affected if the pressure is tripled, but the temperature remains the same?