Answer:
6
Explanation:
Any atom with the atomic number 6 is carbon and has 6 protons
Isotopes are atoms of the same element that have different numbers of neutrons.
There are 3,500 milliseconds in a second.
One second contains 1,000 milliseconds. Three seconds contain 3,000 milliseconds. Half of three hours, therefore, would contain 3,500 milliseconds.
4.5 moles! I hope my answer helps