If you have an atom or copper, an ion of copper and an isotope of copper, what can you say about all of these particles of copper?
They all have the same number of protons, 29 protons
They all have the same chemical properties
The number of protons equals the number of neutrons.
Plzz help

The electromagnetic force acts between what

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

At 300 mm hg, a gas has a volume of 380 l, what is the volume at standard pressure