Find the pH of the equivalence points and the volume of 0.0372 M NaOH needed to reach it in titrations of 28.9 mL of 0.0850 M H2SO3

What are the initial and final kinetic energies of system : On a touchdown attempt, a 95.0 kg running back runs toward the end zone at 3.75 m/s. What are the initial and final kinetic energies of the system |

Explain an electron in the hydrogen atom makes a transition : An electron in the hydrogen atom makes a transition from an energy state of principle quantum number n to the n=1 state. If the photon emitted has a wavelength of 95nm, what is the value of n |

How to compute the ph in the solution formed by naoh : Calculate the pH in the solution formed by adding 10.0 mL of 0.050 M NaOH to 40.0 mL of 0.0250 M benzoic acid (HC7H5O2, Ka=6.3X10-5 |

A characteristic of stock index futures is : If a stock index is 400.00, how many associated futures contracts (multiplier of $250) must be sold to hedge a $10 million stock portfolio with a beta of 1.10? |

State the ph of the equivalence points : Find the pH of the equivalence points and the volume of 0.0372 M NaOH needed to reach it in titrations of 28.9 mL of 0.0850 M H2SO3 |

Explain sodium hydrogen sulfite and potassium cyanide : What are the net ionic equations for: 1. Potassium Fluoride and Ammonium Chloride and 2. Sodium Hydrogen Sulfite and Potassium Cyanide |

Determine what is the wavelength of sound : What is the wavelength of sound if it has a wavespeed of 1.36 m/s and a frequency that is 6.69 Hz? (The unit of measure for the wavelength is a meter, which is written m.) |

How to compute the equilibrium constant keq : At a certain temperature the following reactions have the constants shown- Calculate the equilibrium constant Keq for the following reaction at that temperature- 2SO2 (g) + O2 (g) 2SO3 (g) |

The dunphys do not want to contribute to the presidential : Use the following information to complete Phillip and Claire Dunphy''s 2013 federal income tax return. If information is missing, use reasonable assumptions to fill in the gaps. Ignore the alternative minimum tax for this problem. |

## Explain the same concentration with different ka valuesIf you compare two acids of the same concentration with different Ka values. Which acid solution should have the lower pH value |

## Calculate the weight of the gas22.4 liters of a gas weighs 70g at S.T.P. Calculate the weight of the gas if it occupies a volume of 20 liters at 27C and 700mm Hg of pressure |

## Compute the mass of ascobic acid in the whole tabletCalculate the mass of ascobic acid in the whole tablet( use mass of whole tablet) c) Calculate the %error in the mass of ascobic acid in one whole tablet |

## Explain what is the entropy change for a particleA gaseous system undergoes a change in temperature and volume. What is the entropy change for a particle in this system if the final number of microstates is 0.828 times that of the initial number of microstates. attempted on my own and came up wi.. |

## State experimental solid-oxide fuel cells that use butaneExperimental solid-oxide fuel cells that use butane (C4H10) as the fuel have been reported recently. These cells contain composite metal/metal oxide electrodes and a solid metal oxide electrolyte. Consider the following unbalanced half-reactions: |

## Evaluate the ph during the titration of hypochlorous acidCalculate the pH during the titration of 10.00 mL of 0.400 M hypochlorous acid with 0.500 M NaOH. First what is the initial pH (before any NaOH is added)? The Ka for HOCl is 3.0 x 10-8 M. |

## Calculate the masses of the solid you must measure out tocalculate the masses of the solid you must measure out to prepare 100ml each of 0.025 m kno3 0.025 m cuso4 0.025 m |

## Calculate the density of the sample.Calculate the density of the sample. Show all work and use significant figures and units. |

## Define what is the flow rate of each of the speciesAssume that only a single stream exits the fuel cell. What is the flow rate of each of the species leaving the fuel cell? Not that the flow rates given to correspond a fuel cell rate at approximately 50kW using 2004 technology. |

## Evaluate the reversible work required to transportCalculate the reversible work required to transport 1mol of K+ from a region where CK+=5.25 mM to a region where CK+=35.5 mM if the potential change accompanying this movement is ?f = 0.055 V. Assume T = 298 K. |

## Describes a thioester and reduced cofactorDetermine whether each of the phrases or examples describes a thioester, reduced cofactor, or phosphorylated compound: |

## State what is the partial pressure of each substanceWhat is the partial pressure of each substance if the total pressure of the mixture is 2.35 atm? |

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