Which expression of distance uses si units?
a.
30 miles
b.
16 kilograms
c.
24 feet
d.
500 meters

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

What substance has a mass of 9.5g and volume of 2.1cm^3

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols