The table below shows the elements that mainly comprise each of the four layers of Earth: Elements in Layers
Layer Main Elements
Crust Oxygen, Silicon
Mantle Iron, Magnesium
Outer Core Iron, Nickel
Inner Core Iron

Which of these elements make up the layer that is 0.2 to 1.1 percent of Earth's total diameter?

Magnesium and Silicon

Iron and Magnesium

Iron and Nickel

Oxygen and Silicon

1) a. water molecule breaks up into hydrogen and oxygen on passing electricity. does this involve breaking intermolecular or intramolecular forces of attraction. explain b. on boiling water changes to water vapor. does this involve breaking intermolecular or intramolecular forces of attraction. explain methanol evaporates faster than water. contrast the intermolecular forces and the vapor pressures of methanol and water?