Isotope in chemistry refers to a similar variant of same chemical element where they only differ in number of neutrons <em>while the number of protons remains the same. </em>
Since the <em>aluminum isotope consists 13 protons and 14 neutrons, the mass number of the aluminum isotope </em>would be equal to the sum of number of protons and neutrons present.
<em>As there are 13 protons and 14 neutrons so the mass number will be equal to 27.</em>
Sample Response: liquids flow freely, they take the shape of the container they are in, but have a definite volume. Like liquids, the shape of a gas changes with the container. This is because the atoms in a gas move rapidly and freely to fill any available space. Unlike liquids, the volume of a gas changes depending on the container it is in.
The whole point of a generator is to produce electrical energy. The generator will use a mechanical motor usually running off of gas to produce electricity.
