How do you calculate the relative atomic mass of isotopes? How can the atomic mass be a decimal? There are three isotopes of silicon. They have mass numbers of 28, 29 and 30. The average atomic …

How did Dmitri Mendeleev contribute to the atomic number? How is the atomic number affected by gamma decay? How is the atomic number different from atomic mass? How is the atomic number …

What number of magnesium ATOMS are contained in a #12*g# mass of the metal?

The atomic mass of hydrogen is 1.09 u. > The relative atomic mass is a weighted average of the individual atomic masses. That is, we multiply each isotopic mass by its relative importance (fraction …

May 15, 2017 · 36 neutrons. One way we have of differentiating between various nuclides of the same element is by writing the name of the element followed by a hyphen and the mass number of the …

20gmol^-1 Protons and Neutrons both have a RELATIVE atomic mass of 1gmol^-1. Electrons are considered to have no RELATIVE atomic mass and thus the overall relative atomic mass of an …

You use the atomic number. The atomic number always tells you the number of protons an atom has. For example, the element boron has an atomic number of 5. This means that all boron atoms will …

See explanation. First we can calculate the number of students which have pets. This number is: p=3/5xx35=3xx7=21 Now to calculate the number of students which have fish we have to multiply …

Notice that we have two equations with three unknowns, the mass of the sample, the number of moles it contains, and the fraction that dissociates. In order to be able to calculate the value of f, we will pick …

Sally is making a model of a Mg atom with an atomic mass number of 24. She has balls for the protons, neutrons, and electrons. She has added 6 neutrons to her model. How many more neutrons does …