An electron has a mass of 0.00054858 atomic mass unites. It is significantly smaller than a proton or neutron; the bulk of an atom's mass is in its nucleus in the protons and neutrons. More » Science Measurements

Electrons have a relative mass of 9.1 x 10^-31 kilograms, or 0.51 megaelectron volts. They are a lot smaller than protons and neutrons; and, an electron is roughly 0.054 percent of the mass of one neutron. More »

An electron is a negatively charged subatomic particle that orbits around the nucleus of an atom. The negative charge of the electrons is balanced by the positive charge of the protons in the nucleus. Electrons have a mu... More » Science Biology Cells

The density of a pencil varies based on the type of pencil, but it can be found by measuring the pencil's mass, preferably in grams, and then dividing the mass by the volume. The formula for density is density = mass/vol... More »

Because the milliliter is a unit of volume, and grams are a unit of mass, the answer to this question depends on what material one is measuring. For one of the most common materials, water, the conversion is simple. Beca... More »

A milliliter is a measurement of volume, while a gram is a measurement of mass. Therefore, it is impossible to convert between the two measures without additional information. However, one can determine the mass if the d... More » Science Measurements

The weight or mass of a cotton ball varies because cotton balls come in different sizes and densities. However, many cotton balls have an estimated mass close to 0.5 grams, according to measurements obtained from Amazon ... More »