What is the atomic mass of an element with 40 protons 40 electrons and 46 neutrons

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

What is the area in square meters of 448 g ai foil that has a thickness of 23921 nm? the density is 2.70 g/cm

What occurs when a cell engulfs large food particals