Compound X is dissolved in 100 mL of solvent B, and extracted using solvent A. The partition coefficient PXAB has a value of 5.00. What percentage of X remains in solvent B after: A single extraction of 100 mL solvent A

A cube of metal is 1.32 cm on an edge. It has a mass of 21.3 g.  Calculate the density of  this metal cube.  Show work for each step including the units in each step.

QUESTION 1 Later on in the course, you will learn how to use the Navier-Stokes equations to predict the flow behaviour of Newtonian fluids in various systems with fairly simple geometries. Below is a schematic for the pressure-driven flow of a Newtonian fluid in the annular space between two concentric cylinders - the inner cylinder has radius Ri and the outer cylinder has radius Ro. PO>PL • the applied pressure (AP) Four of your colleagues attempted to solve the Navier-Stokes equations to determine an expression for Q, the volumetric flow rate of fluid, in terms of the following parameters: the length of the annular space (Z) the viscosity of the fluid (μ) Unfortunately they each came up with a different expression for Q: Q TR² AP πR ΔΡ -|- -|- Q = 8μ L 8μ L * Ro Z AP -A1-(-)* 8μ L Ro ¹ (R₂) In 2R₁2R0 ¹-(₂)]²* ¹ (R₂) In Q TRAP 8μ L -(.*. R₁ Ro [p()] (R₂) Ro In 1- (+)²] ² (Ro R₁ In Using a dimensional analysis, determine which (if any) of the four might be the correct equation for Q.

I got 10^(-8) instead of 10^(-5) can someone tell me what I'm doing wrong or if my answer is correct?