Admita uma solução aquosa saturada de HCℓ com concentração percentual mássica de 36,5% e densidade igual a 1g/mL. Calcule a concentração molar dessa solução, expressa em mol/L.

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units:

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Identify two types of chemical bonding in the source of dietary potassium