2. Saturn orbits the sun every saturn orbits the sun every 12 years, Jupiter every 30 years, and Uranus every 84 years. In how many years from now will all three planets have the same positions in the sky as they do today?
How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it