Since all objects are weightless in orbit, how is it possible for an orbiting astronaut to tell if one object has more mass than another?

that is real easy the size,shape,

the gas collects in coils that then becomes a liquid that then flows through the coils inside the refrigerator

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.