In a first order enzyme-catalyzed reaction, the velocity of the reaction is proportional to the while in a zero order enzyme-catalyzed reaction, the velocity of the reaction is proportional to the ) amount of enzyme; concentration of substrateb) concentration of substrate; amount of enzymec) concentration of substrate; speed of the reactiond) speed of the reaction; concentration of substrate

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.

What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added

Large crystals are formed when igneous rocks cool very slowly igneous rocks cool very quickly sedimentary rock is eroded metamorphic rocks change into igneous rock