how is the mass number of a molecule determined? what is the relationship between the mass number and the molecular weight of a compound?

atomic number=14Si28 = mass number. The mass number is 28, which tells us that silicon has a total number of protons and neutrons that equals 28. As we ... The atomic mass now known to be the sum of the protons and neutrons in the nucleus. Mass Number. Rutherford showed that the vast majority of the mass of an atom ... Jul 18, 2018 ... The mass number of a nuclide is equal to the number of protons and neutrons in the nucleus; variation in the number of the latter produces ... The correct answer is (D) The nucleus contains both protons and neutrons, the sum of which determines the mass number. ... equal to 1. The first two can be setup in the menu, and the diffuse ... Mass number of the selected species. Output parameters: Helium number density ... Oct 27, 2011 ... by an equal sign (=) and the fixed value (optionally followed by ... (same mass number, chain mode or same charge number, charge mode). ... mass number is being discussed. Occupational (using the NRC's definition of ... Positron is a particle having a mass equal to that of the electron and a positive ... Dec 20, 2020 ... How many neutrons are there in atoms of oxygen-18? We know that the mass number is equal to the number of protons plus the number of neutrons. Jul 22, 2020 ... When compared to the average mass per nucleon in carbon-12, which is moderately strongly-bound compared with other atoms, the mass defect of ... The state of a gas is defined by various properties which we can observe with our senses, including the gas pressure (p), temperature (T), mass (number of ...