Quarks are the reason protons have a positive charge. Each quark has a fraction of an electric charge. A proton has two up ...

The Periodic Table is a well-organized chart that contains all 118 known elements in the universe. These elements are the ...

The picture shows a close-up of one carbon atom. A hydrogen atom has one proton as the nucleus and one electron in the region outside the nucleus. The electron and proton are attracted to each other.

It is the number of protons in the nucleus of an atom that is the defining feature of the atom. It's what makes one element different from another. The number of protons in an atom is called its ...

1. Convert kilograms/second to grams per second. 1 kg = 1000 grams. If the mass flowrate is 0.25 kilograms/second, convert this to 250 grams/second. 2. Convert grams to moles, using the molar mass of ...