Chemistry, 01.09.2019 07:20 GoAheadAndSmileToday
Which sequence represents a correct order of historical developments leading to the modern model of the atom?
(1) the atom is a hard sphere => most of the atom is empty space=> electrons exist in orbitals outside the nucleus
(2) the atom is a hard sphere => electrons exist in orbitals outside the nucleus => most of the atom is empty space
(3) most of the atom is empty space => electrons exist in orbitals outside the nucleus => the atom is a hard sphere
(4) most of the atom is empty space=> the atom is a hard sphere => electrons exist in orbitals outside the nucleus
Answers: 2
Chemistry, 22.06.2019 14:30
100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)
Answers: 1
Chemistry, 22.06.2019 17:00
Reduction is a reaction which results in a in electrons and a in positive charge of the atom or ion 1) a- loss 1) b- gain 2) a-increase 2) b-decrease
Answers: 1
Chemistry, 22.06.2019 18:10
The atom fluorine generally will become stable through the formation of an ionic chemical compound by accepting electron(s) from another atom. this process will fill its outer energy level of electrons.
Answers: 1
Which sequence represents a correct order of historical developments leading to the modern model of...
Biology, 27.04.2021 22:00
Mathematics, 27.04.2021 22:00
Social Studies, 27.04.2021 22:00
English, 27.04.2021 22:00
Mathematics, 27.04.2021 22:00
Mathematics, 27.04.2021 22:00
Biology, 27.04.2021 22:00
Chemistry, 27.04.2021 22:00
Mathematics, 27.04.2021 22:00