Which galaxy is represented in the image above?
A. Irregular galaxy
B. Spiral galaxy
C. Elliptical galaxy
D. Electromagnetic galaxy

If a reactant was removed, did the new equilibrium system shift to make more reactants or more products?

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.

Nuclear decay is the spontaneous decay of one element into a. an x-ray b. a ray of light c. another element