State the relative charge and relative mass of a proton, neutron and electron. explain relationship between two isotopes of same element. explain why these isotopes have identical chemical properties

How many grams of n2h4 will be consumed by 23 g of n2o4

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium