Technetium-104 has a half-life of 18.0 minutes. How much of a 165.0 g sample remains after 126 minutes?

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

How many neutrons does a atom of cobalt have?

Which is a characteristic of the electron sea model for metallic bonding? molecular orbitals overlap to produce bands. electrons flow easily between metal nuclei. electrons are in fixed positions in the orbitals. atomic nuclei are arranged in an irregular pattern.