5. How many moles are present in 4.20x10^24 atoms of Pb

The best solution for preventing harm to people and pets from severe hurricanes involves determining and warning residents about what

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots

What type of matter is made of only one kind of atom