When leonor michaelis and maude menten first derived the michaelis-menten equation they made some assumptions. select each statement that describes an assumption of the michaelis-menten model. 1) the vmax can be calculated by multiplying the km by 2 2) the formation of es from e+p is so small that this rate can be ignored. 3) the rate of formation of es is equal to the rate of loss of es 4) the enzyme can reach maximal velocity when saturated with substrate

(1.6 × 10-19)(5.0 × 106) = c × 10d identify the missing numbers below to show the result of multiplying the numbers.

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.

The ammonia molecule in the diagram has the observed bond orientation because