A voltaic cell consists of a Mn/Mn2+ electrode (E°= -1.18 V) and a Fe/Fe2+ electrode (E°= -0.44 V). Calculate [Fe2+] if [Mn2+] = 0.050 M and Ecell = 0.78 V at 25°C?

Illustrate what is the frictional torque : The applied force acts for 5.9 s, during which time the angular speed of the wheel increases from 0 to 12 rad/s. The applied force is then removed, and the wheel comes to rest in 65 s. Illustrate what is the frictional torque? |

Regionalism is a form of realism : Regionalism is a form of Realism that emphasizes realistic settings, using local dialect, customs, and other specific details of a place. |

Outline on birth control pills : Full-sentence outline on Birth Control Pills |

Exact value of expressions : Find the exact value to the expressions cos(alpha+beta) and sin(alpha+beta) and tan(alpha+beta) under the following conditions.. cos(alpha)=21/29, alpha lies in quadrant 4, and sin(beta)= -4/11, beta lies in quadrant 3. |

Calculate [fe2+] if [mn2+] = 0.050 m : A voltaic cell consists of a Mn/Mn2+ electrode (E°= -1.18 V) and a Fe/Fe2+ electrode (E°= -0.44 V). Calculate [Fe2+] if [Mn2+] = 0.050 M and Ecell = 0.78 V at 25°C. |

What is the ideal probability of walking a guest : Mariott estimates that the penalty to "walk" a guest whose reservation cannot be honored due a lack of space is approximately $100. What is the ideal probability of "walking a guest." |

Find out the electric potential at points a and b : Two charges, q1 = -80 nC and q2 = +50 nC are placed 3 m apart as shown. The (x,y) coordinates of the charges and two other points in meters are indicated. Find out the electric potential at points A and B |

Determining double angle problems : Use the given information to find the exact value of each of the following: Simplify answer, using radicals as needed, use integers or fractions for any number in the expression, rationalize all denominators. |

Probability problems accidents requiring medical assistance : What then is the chance that there will be a need for exactly 2 ambulances during that time slot on any given Wednesday morning? |

## Use a expression to determine the specific concentrationsusing a sample of river water sample analyzed for total inorganic carbon ,The river pH= 7.1 and an inorganic C concentration of 6.97 mg C/L.c |

## Calculating solubility of copper sulfideWork out the solubility of copper(II)sulfide. Take it that 1 litre of the mixture weighs 1 kg. (in g/100g), CuS (s) Cu^2+ (aq) + S^2- (aq) |

## What is the new volumeA quantity of gas under a pressure of 1.78 atm has a volume of 550 cm square. the pressure is increased 2.50atm while the pressure remains constant what is the new volume. |

## Calculate how many moles of gas was in the bicycle tireCalculate how many moles of gas was in the bicycle tire when the total volume of gas collected is 5.60L{rm L} at a pressure of 765torr{rm torr} and a temperature of 25 °C^circ {rm C}. |

## How many moles of air moleculesA 180 kiln is used for vitrifying ceramics. It is currently operating at 1025 , and the pressure is 1.100 . How many moles of air molecules are within the confines of the kiln. |

## Determine the net overlap for molecular orbitalConsider a linear string of five hydrogen atoms, H^5. Determine the net overlap for each molecular orbital and classify it as bonding, nonbonding, or anti-bonding. |

## What is the total energy of the photonsWhat is the total energy of the photons detected in a period of one hour If a radiation detector is capturing 8 X 10^7 photons per second at this wavelength,? |

## What volume of hydrogen gas could be producedWhat volume of H2 could be produced at a temperature of 19 oC and a pressure of 764 torr by the reaction of 2.98 g of aluminum with hydrochloric acid. |

## Find out the formula of the gas producedFind out the formula of the gas produced if Na 3 P(s) sodium phosphide, is reacted with H 2 O |

## Determine the identity of the diatomic gasDetermine the identity of the diatomic gas when a boy places 59.5 gm of a diatomic gas into a ten litres container at 25 degree Celsius (measures the pressure to be 2.053 atm. ) |

## Determine the final ph of the solutionHow many grams will remain after 98.0 days if Phosphorus-32 has a half-life of 14.0 days Starting with 6.00g of ,? |

## Calculate the final temperature of the mixtureA 32.0-g sample of water at 260. K is mixed with 47.0 g water at 300. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings. |

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