In one experiment, a student added a total of 15.00 mL of 0.5471 M HCl to 1.4741 g to of an unknown which contained CaCO3 (molar mass = 100.09 g/mol). The resulting solution required 12.36 mL of 0.1211 M NaOH to back titrate the excess HCl. What was the percent CaCO3 in the unknown? Report your answer to two (2) decimal places

What have been some of consequences of government price : explain using a numerical example, how the lawof diminishing returns operates. how does the law of diminishing returns explain the behavior of total cost, total variable cost and marginal cost as output increase |

Explain important to have a set of standard conditions : What are the standard conditions of temperature and pressure, and why is it important to have a set of standard conditions |

What is the electric field strength between the plates : A doubly charged ion is accelerated to an energy of 35.0 keV by the electric field between two parallel conducting plates separated by 2.20 cm |

What voltage is applied to the 9.00 µf capacitor : In open heart surgery a much smaller amount of energy will defibrillate the heart, What voltage is applied to the 9.00 µF capacitor of a heart defibrillator that stores 55.0 J of energy |

Explain naoh to back titrate the excess hcl : The resulting solution required 12.36 mL of 0.1211 M NaOH to back titrate the excess HCl. What was the percent CaCO3 in the unknown? Report your answer to two (2) decimal places |

Calculate the strength of the electric field : A hollow, conducting sphere with an outer radius of 0.240m and an inner radius of 0.210m has a uniform surface charge density of +6.84*10-6C/m2, Calculate the strength of the electric field just outside the sphere |

How large of sample is needed to ensure that the probability : The number of hours spent studying by students on a large campus in the week before final exams follows a normal distribution with a standard deviation of 8.4 hours.A random sample of these students is taken |

Rejection of the null hypothesis : Develop hypotheses so that rejection of the null hypothesis will allow us to conclude that the most recent bullish sentiment is weaker than that of one month ago. |

Determine which were years of inflation : Compute the inflation rate for each year 1989 - 2006 and determine which were years of inflation. In which years did deflation occur In which years did inflation In which years did deflation occur In which years did disinflation occur |

## Calculate the molality and molarity of an nh3 solutionCalculate the molality and molarity of an NH3 solution made up of 37.0 g of NH3 in 70.0 g of water. The density of the solution is 0.982 g/mL. |

## How many feet of copper can be obtained from the ingotA copper refinery produces a copper ingot weighing 131 lb. If the copper is drawn into wire whose diameter is 8.25 mm, how many feet of copper can be obtained from the ingot? |

## Explain what makes the reaction spontaneousWhen ammonia is added to nickel ions in aqueous solution, the water molecules bound to the Ni2+ are replaced by ammonia molecules. |

## Explain student performed two melting-point determinationstudent performed two melting-point determination on a crystalline compound. in one determination the capillary tube contained a sample about 1-2 mm in hight and the melting range was found to be 141-142C |

## How many moles of hcl would it take to neutralizegiven a 0.31 g piece of sodium metal to react with water, how many moles of HCl would it take to neutralize the sodium hydroxide produced? |

## Explain and identities of the components in a mixture by gasIdentities of the components in a mixture by Gas chromatography may be determined by the technique called "spiking". Suppose you had run a chromatogram of your product and then deliberately added a known sample of 2 methyl 2 butene |

## How many grams of h2so4 would be producedIf 450 g SO2 escaped into the atmosphere and all the escaped SO2 were converted to H2SO4. How many grams of H2SO4 would be produced in the atmosphere? |

## What is the composition of vapor of a pentane-hexanewhat is the composition of vapor of a pentane-hexane solution that has a vapor pressure of 373 torr at 25 degree celcius? Given is Pure Hexanes and pentanes vapor pressure at 25 degrees celcius. Pentane - 511 torr. Hexane -150 torr. |

## Calculate w and delta e when one mole is vaporizedcalculate w and delta e when one mole of a liquid is vaporized at its boiling point (80 degrees celscius) and 1.00 atm pressure. Delta H vaporization for the liquid is 30.7 kJ/mol at 80 degrees celscius. |

## How many molecules of ethanol are presentHow many molecules of ethanol are present in 125mL of ethanol? The density of ethanol is 0.789g/cm^3. |

## Explain raising the temperature of 1 liter of waterAt 1 atm, how many moles of CO_2 are released by raising the temperature of 1 liter of water from 20 celcius to 25 celcius |

## Define the various ways that the fischer esterificationdiscuss the various ways that the Fischer esterification reaction can be run to maximize conversion to ester. |

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd