Answer:
1. Not to have enough salt water on the foil
2.not cleaning the foil well to remove interfering materials
Explanation:
All matter has mass and occupies space. Volume is a measure of how much space an object occupies. ... "Mass" only depends on how much matter is in an object. "Weight", on the other hand, depends on how strongly gravity pulls on an object.
is an outer shell electron that is associated with an atom
Answer:
13.8%
Explanation:
take the 123g and divide it by the total mass which is 123g + 765g
123/888 = .138
multiply by 100 for a percentage = 13.8%
Air is a mixture of approximately 80% nitrogen, 20% oxygen and a small amount of many other gases.