A 100.0 mL of acetic acid solution of unknown molarity is titrated with 0.15 M NaOH solution. The titration requires 43.25 mL of the base. Determine the molarity of the acid, CH3COOH.

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Determine the molarity of the acid : A 100.0 mL of acetic acid solution of unknown molarity is titrated with 0.15 M NaOH solution. The titration requires 43.25 mL of the base. Determine the molarity of the acid, CH3COOH. |

Calculate the mole fraction of toluene in a solution : Toluene is a liquid compound similar to benzene. Calculate the mole fraction of Toluene in a solution that contains 112 g Toluene and 221 g Benzene. |

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What is this mass of acetic acid expressed in micrograms : The acidic constituent in vinegar is acetic acid. A 10.0-mL sample of a certain vinegar contains 500. mg of acetic acid. What is this mass of acetic acid expressed in micrograms? |

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## Calculate the concentrations of each of the ionsCalculate the concentrations of each of the ions in 0.12 M (NH4)2HPO4. a) [NH4+], M b) [HPO42-], M |

## What is the osmotic pressure of the solution69.7 grams of a solute with a molecular mass of 2790 grams are dissolved in enough water to make 1.00 dm(3) of solution at 20 degrees C. What is the osmotic pressure of the solution? express your answer in kPa |

## Define hydrogen bonds play a role in the properties of dnaHydrogen bonds a) play an important role in the solvent properties of water b) are not involved in protein structure c) play a role in the properties of DNA, but not of RNA d) give water a lower boiling point than expected 44 |

## How many grams of oxygen are neededwhen ethane (C2H6) is burned, how many grams of oxygen are needed to react with 477 grams of ethane? |

## How many grams of methane ch4 must be combustedHow many grams of methane CH4 must be combusted to heat 1.15 kg of water from 24.0 C to 93.0 C, assuming H2O as a product and 100% efficiency in heat transfer? |

## What is the molarity of kmno4If you titrate 1.0 g of H2O2 solution (30wt%) with KMnO4, 25.05 ml of this KMnO4 solution is used. What is the molarity of KMnO4? |

## Explain vaporizing the resulting benzeneCalculate delta S0 for the following processes: a.) Heating 1 mol of benzene(liquid) from 298K to 353 K at 1 bar pressure, neglecting any T- dependence of Cp. |

## Compute a meteorological balloon of radius nA meteorological balloon of radius 1.0M at sea level and 20 degrees C. At it's maximum altitude the radius of the balloon is 3.0M and the temperature is -20 degrees C |

## What is the mass of the carbon dioxide producedif 5.00 grams of NaHCO3 decomposes, what is the mass of the carbon dioxide produced? |

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## Pressure difference between ch4 and an ideal gasCalculate the pressure difference between CH4 and an ideal gas under these conditions. The van der Waals constants for CH 4 are a=2.300L2⋅atm/mol2 and b=0.0430 L/mol. |

## What is the limiting reagent?when 7.50g of magnesium reacts with 9.50g hydrochloric acid, hydrogen gas is formed. what is the limiting reagent? |

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