What volume does 0.25 moles of oxygen gas occupy at stp? 22.4 l2.24 l10.0 l5.60 l

At STP 1 mole of gas takes up 22.4 L

So volume of gas = number of moles*22.4
= 0.25*22.4
=5.60 L
Hope this helps!

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.