the beaker shown below contains a 0.58 m solution of dye in water. how many moles of dye are there in the beaker?

Molarity is the number of moles that are contained in 1000 cm³ or a liter of water.
In this case the molarity is 0.58 M meaning 0.58 moles of the dye are contained in 1000 cm³ or a liter of water.
The beaker is at  150 cm³, there the number of moles will be;
=0.58 × 150/1000
= 0.087 moles

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.