Question 8 (1 point) A cylinder with a movable piston contains 7.00 moles of helium. What is the final amount of moles in the cylinder if the volume was changed
from 8.00 L to 12.7 L?
mol He

Mass of water is smething that you froma drug test or sum girl ya

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom

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