A hypothetical pure element consists entirely of two isotopes. The natural percent abundance of
the isotope with mass 25.91, \mathrmu is 41\%
The other isotope has mass 29.3\ \mathrmu.
Calculate the atomic weight of the naturally
occurring element.

What does that mean you dum bum

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.

Ibelieve the answer is weathering,hope my answer has you : )