A single paper clip weighs about one gram. So 100 paper clips would weigh?

A- centigram
B- kilogram
C- kilometer
D-dekagram
E-milligram
F- a hectometer
G-hectogram

Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.

When a scientific theory has been tested and proved by the scientific community, it becomes a law

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?