in the presence of dilute H2SO4, K₂ Cr2O7 is reduced to Cr2(SO4)3. Find out the valency of Cr in K2Cr2O7 . write the status of K2CR2O7. Calculate the equivalent weight of K2CR2O7​

How many moles are in 43.9 l of oxygen

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?

When developing a model of the cycling of water between the land, ocean, and atmosphere, one must include the forces that propel the water. for the model, these forces would be which of the following?