Calculaţi concentraţia procentuală pentru o soluţie obţinută prin adăugarea a 120 apă peste o soluție de 320g saramură de concentrație 40% ?

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

Asolid that forms and separates from a liquid mixture is called