22. Which type of lever has the fulcrum between the output and input sources? second-class lever
O third-class lever
O first-class lever
fifth-class lever

Consider the nuclear equation below. 239 > x + 4 he 94 2 what is x? 1.235 cm 96 2.243 u 92 3.235 u 92 4.243 cm 96

In the cathode ray tube experiment, j. j. thomson passed an electric current through different gases inside a cathode ray tube in the presence of an electric field. in which two ways did this experiment change scientists’ understanding of the atom?

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o