1) To characterize the elution properties of the solute in a way independent of the geometry of the chromatographic column, the retention constant R = Vo / Ve is used. R is equal to the fraction of solute in the void volume Vo and (1 - R) is the fraction of solute in the pore volume Vp during the chromatographic run. Show that (1 - R) / R = kÃ¢ï¿½ï¿½ [NOTE: k' = the column capacity factor (Ve - Vo) / Vo]

2) Given the E1% = 21.9 for cytochrome c, how much potassium ferricyanide is required to react with 10 mL of a cytochrome c solution with an absorbance of 2.0 for a 1 cm path length? NOTE: E1% = 21.9 means that a 1% solution of cytochrome-c has an absorbance of 21.9. Potassium ferricyanide = K3Fe(CN)6. Molecular weight of cytochrome-c = 12,200 g/mol

Find the m angle e d f : If Line segment B H || Line segment E G , find the m Angle E D F . |

Explain the total flow rate of the air or acetone stream : Air coming from a painting operation contains 10.0 wt% acetone. The total flow rate of the air/acetone stream is 1.00x103 lbm/min. This stream is sent to a scrubbing system where it is mixed with water. |

What is the relationship between mr and mc : Create a table that shows Total Revenue, Total Cost and Total Profit, (in your table, let quantity run from 0 to 13 in increments of 1.) Indicate in your table where both total profits and total revenues are maximized Q TR TC Tp |

Explain what is the equivalent mass of metal : What is the equivalent mass of metal that is dissolved in sulfuric acid during hydrogen release if 2.27 g metal reacts with 30 ml 33 w/w% H2SO4 (density 1.25 g/cm^3, |

Explain geometry of the chromatographic column : To characterize the elution properties of the solute in a way independent of the geometry of the chromatographic column, the retention constant R = Vo / Ve is used. R is equal to the fraction of solute in the void volume Vo and |

How many units should each plant produce : A perfectly competitive firm faces a market price of $10 for its output X. It owns two plants, A and B, whose total costs are TCA = 10+2X+.25X2,TCB = 15+.4X+.1X2. How many units should each plant produce to maximize profit at that price |

Calculate the volume of the region bounded : Use a triple integral and an appropriate change of coordinates to calculate the volume of the region bounded by the xy -plane, the surface z = x^2 + y^2 and the cylinder over x^2/9 + y^2/4 = 1 . |

What is the dimension : If the length of a rectangle is 2 less than 5 times the width and the perimeter is 476", what is the dimension? |

Find the shaded area diameter : cylender find the shaded area diameter small inside cylender is 1 and the height is 5 the shadded area the radius is 3 and the height 5 what is the shaded area. |

## What volume of hydrogen is necessaryWhat volume of hydrogen is necessary to react with five liters of nitrogen to produce ammonia? |

## Determine the mass of ironDetermine what is Δ[Br- ]/Δt If Δ[BrO 3 - ]/Δt = 0.018 M/s express your answer in M/s? |

## What is the mass fraction of the metal in the metal sulfideA metal sulfide is 71.6% metal by mass. What is the mass fraction of the metal in the metal sulfide? |

## Calculate the phConsider the titration of 100.0 ml of .100M H2NNH2 by .200 M HNO3. Calculate the pH when the following volumes of HNO3 have been added |

## Explain how does a water softener work chemicallyhow does a water softener work chemically? What's better to drink tap water or bottle springwater and why? |

## Explain liquid mixture composed of methaneEstimate the viscosity of a liquid mixture composed of methane = 59.30 mole%, propane = 37.46 mole%, and n-octane=3.24 mole% at a temperature of 311 K and pressure |

## Calculate the ph for the titration with hcloCalculate the pH for the following case in the titration of 50.0 mL of 0.140 M HClO(aq) with 0.140 M KOH(aq).HClO is a weak acid with a Ka |

## Explain what is the composition in mole fractionsWhat is the composition in mole fractions of a solution that has a vapor pressure of 39 at 20 ? Express your answer using two significant figures. |

## State an automobile tire is inflated to a volumeAn automobile tire is inflated (while cold) to a volume of 11.8 L and a 'gauge pressure' of 36.0 psig at a temperature of 12oC. Driving on a hot day, the tire warms to 65oC and its volume expands to 12.2 L. |

## Write the formula for the selenite ionThe selenite ion is an oxoanion of selenium bearing a negative two charge and containing three oxygen atoms. Write the formula for the selenite ion. |

## Compute kb for methylamineCalculate Kb for methylamine. Is methylamine strong base or weaker base than ammonia? |

## Describe why ice and concetrated hclExplain why ice and concetrated HCl is used in Friedel Crafts Acylation. ( weigh 50 g of ice in 500 ml beaker. Add 25 ml of concentrated hydrochloric acid to the beaker. |

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