7. Nickel makes up 25% of the total mass of a fifty pence coin. A fifty pence coin has a
mass of 8.0g
Calculate how many moles of nickel atoms are in a fifty pence con.

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

Surface currents are caused by blank space . question 14 options: surface currents are caused by? differences in water temperature high salinity differences in density wind forces

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.