Which statement accurately describes an object's weight and mass? A. Its weight changes with gravitational force, but its mass does not.
B. Its mass changes with gravitational force, but its weight does not.
C. Both its weight and its mass are the same everywhere in the
universe.
D. Its weight is the same everywhere in the universe, but its mass is
not.

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

Two metal blocks that have slightly different temperatures are placed next to one another. after five minutes, they both have lower but equal temperatures. according to the law of conservation of energy, what  most likelyhappened? energy was created inside the blocks.energy was destroyed inside the blocks.energy was absorbed into the blocks from outside the system.energy was transferred from the warmer block to the cooler block.

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.