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Nail polish remover containing acetone was spilled in a room 7.63 m 5.68 m *5.16 m.
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Measurements indicated that 3,450 mg of acetone evaporated. Calculate the acetone concentration in micrograms per cubic meter.

Which statement describes james chadwick’s discovery.

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.

Which description best characterizes the motion of particles in a solid?