Adimensionless quantity -
a) never has a unit
b) always has a unit
c) may have a unit
d) does not exist

they are playing too much beyblade in the office

explanation:

measuring things 1 litre of water

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

i really dont know but i will try okay.

so i think u would just add all them up and get your answer..