Calculate the pressure drop expected on hydrogenation of the mixture of 5.00 ml of cyclohexene and 35 ml of cylclohexane. I know I have to use PV=nRT but this is all I know we are starting at 60 psi of pressure.

Explain enthalpies of formation are independent of temp : Calculate the equilibrium constant at 0c and at 50c(assuming enthalpies of formation are independent of temp) |

Describe what the confidence interval tells you : Based on the above data, find a 95% confidence interval for the average score on the 1st quiz. |

What percent of the students scored below 30 : A random sample of 100 students who took a statistics exam were asked their score on the exam. The mean score on the test was 50; the standard deviation was 10. The scores are normally distributed. |

Why was islam popular : How would you characterize the pre-Islamic world of the Middle East? Why was Islam popular? How is Islam both a religion and a social system? |

Compute the pressure drop expected on hydrogenation : Calculate the pressure drop expected on hydrogenation of the mixture of 5.00 ml of cyclohexene and 35 ml of cylclohexane. I know I have to use PV=nRT but this is all I know we are starting at 60 psi of pressure. |

Find the force will the cylinder rod exert : The below cylinder has a 3.00 inch bore, 1.00 inch rod and a 40.00 inch stroke, what force will the cylinder rod exert after the cylinder extends |

Explain why this scenario would meet the criteria of : A local bakery determines that the probability of a customer ordering a blueberry muffin is 50%. 5 customers come into the bakery. |

Depict structures for p-bromoaniline : draw structures for p-bromoaniline, 3,5 dimethylbenzoic acid, p-chlorobenzaldehyde and 1-phenyl-3-methylpentane |

Assume intel uses the mean speed as the accepted speed : Assume the following summary statistics, which describe the speed of a computer processor, are available from a sample of Intel Pentium IV chips manufactured at the company's Arizona chip plant (values are in Megahertz): |

## What is the mass of a cube of leadThe mass of a cube of iron is 439 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions? |

## Define species that need to be calculatedThe ionization constants for sulfurous acid are Ka1 = 1.4*10^-2 and Ka2 = 6.3 * 10^-8. Species that need to be calculated (Molarity): |

## What is the specific heat capacity of the unknown liquidIf the heat capacity of the calorimeter is 85 JK , and the density of the liquid -1 is 2.34 gmL , what is the specific heat capacity of the unknown liquid? |

## What important criteria used to monitor a chemical reactionwhat practical and creative decision must a scientist make? What important criteria must this choice fulfill? |

## Compute the ph at the equivalence point for titratingCalculate the pH at the equivalence point for titrating 0.170 solutions of each of the following bases with 0.170 M HBr. |

## What is the quantity of heat evolvedHydrazine derivatives are commonly used in rocket fuels. Combustion of N2H4 produces N2(g) and H2O(g). When 1.00 g of N2H4 is burned in a bomb, DT = 3.51 oC. If C = 5.51 kJoC-1, what is the quantity of heat evolved? What is DH of this reaction? |

## Calculate the amount of milligrams of zns20.0ml of 0.150M Zn(NO3)2 are mixed with 20.0ml of 1.00 x10-4M Na2S. Calculate the amount of milligrams of ZnS (s) that will precipitate. (Ksp = 1.6 x10-24) |

## Explain what is the molar mass of the enzymeAssuming the density of the solution is 1.00 grams/mL, what is the molar mass of the enzyme? |

## Define chlorobenzoic acid and chlorophenolThis was allowed to react under reflux for an hour and then the products seperated. I wrote out a mechanism before lab and ended up predicting 4-chlorobenzoic acid and 4-chlorophenol as my final products. |

## How many grams of water can be cooledHow many grams of water can be cooled from 45 C to 23 C by the evaporation of 63 of water? (The heat of vaporization of water in this temperature range is 2.4 kJ/g . The specific heat of water is 4.18 J/g*K .) |

## Define the bond dipoles of iodomethaneWrite a brief discussion of the bond dipoles of iodomethane and the corresponding Grignard reagent. |

## Explain burned in excess oxygen in a bomb calorimterA 1.800 g sample of solid phenol (C6H5OH) was burned in excess oxygen in a bomb calorimter whos heat capacity is 11.66 kj/°C. The temprature increased from 21.36°C to 26.36°C. |

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