In an atom, the nucleus contains an equal number of protons and electrons all the protons and neutrons all the protons and electrons only neutrons only protons

List four observations that indicate that a chemical reaction may be taking place

What is the percentage composition of carbon in the compound ch4

Sodium sulfate dissolves as follows: na2so4(s) → 2na+(aq) + so42- (aq). how many moles of na2so4 are required to make 1.0 l of solution in which the na concentration is 0.10 m?