If the liquid shown in the picture anove is water and if the air pressure is equal to the normal atmospheric pressure at sea level, what must the temperature be, in degrees celsius?

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

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The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.