Under standard-state conditions at 25°C, what spontaneous reaction will occur in aqueous solution among the ions Sn4+, Sn2+, Co3+, and Co2+ ? What will be the E°cell for this reaction? A. Sn2+(aq) + 2 Co3+(aq) ? Sn4+(aq) + 2 Co2+(aq) E°cell = + 1.95 V B. Sn2+(aq) + 2 Co3+(aq) ? Sn4+(aq) + 2 Co2+(aq) E°cell = + 1.69 V C. Sn4+(aq) + 2 Co2+(aq) ? Sn2+(aq) + 2 Co3+(aq) E°cell = + 1.95 V D. Sn4+(aq) + 2 Co2+(aq) ? Sn2+(aq) + 2 Co3+(aq) E°cell = + 1.69 V E. Sn2+(aq) + Co2+(aq) ? Sn4+(aq) + Co(s) E°cell = + 0.41 V

Who demands coverage at this price : Find the price elasticity of demand with respect to the money price using arc elasticity and find the price elasticity of demand with respect to the full price using "arc elasticity," which evaluates the price |

Determine the new volume of the neon gas : A 1.50L sample of neon gas at 1.10 atm and 25 degrees celsius is heated to 45 degrees celsius. The neon gas is then subjected to a pressure of 1.50 atm. Determine the new volume of the neon gas. |

What would be the volume of the gas : The temperature of the ideal gas in the container shown is 300 K. The gas occupies a volume of 1.27 m3. What would be the volume of the gas if its temperature were decreased to 100 K? No blocks are added to or removed from the lid. |

Calculate the mass of propylene glycol : Calculate the mass of propylene glycol that must be added to 0.360 of water to reduce the vapor pressure by 2.88 torr at 40°C (Pressure of H2O is 55.3 torr at 40°C ). |

State what spontaneous reaction will occur in aqueous : what spontaneous reaction will occur in aqueous solution among the ions Sn4+, Sn2+, Co3+, and Co2+ ? What will be the E°cell for this reaction? |

State hydrogen and sulfur in gliding : Minimal energy cost of H2S conversion to hydrogen and sulfur in gliding-arc is 1.6 eV/molec |

Compute conversion degree of co2 : Energy cost of dissociation was found to be 4 kWh/m3 of CO2. Calculate conversion degree of CO2 into CO and O2 in this system. |

Explain system is allowed to equilibrate once again : Once the system has reached equilibrium, 5.00g of NO2 is injected into the vessel, and the system is allowed to equilibrate once again. Calculate the mass of N2O4 in the final equilibrium mixture. |

What to do with the numbers from the regression analysis : Estimating the demand for money and plotting a demand curve for that estimation based on the equation: M1=a+b1(interest)+b2(time). Where a is the intercept value for the demand curve |

## How many moles of hydrogen are presentIf 3.93 g of sodium borohydride contains 2.5 × 10^23 H atoms, how many moles of H are present in 27 cm3 of sodium borohydride (of density 1.074 g/cm3)?Answer in units of mol |

## Explain the law of constant compositionWhich of the following could be the results of the decomposition of the other sample, being consistent with the law of constant composition (also called the law of definite proportions or law of definite composition)? |

## What will the pressure be at 267?cAt 123?C, the pressure of a sample of nitrogen is 1.45 atm. What will the pressure be at 267?C, assuming constant volume? |

## What is the identity of other isotope of silverSilver has an average atomic mass of 107.87 u. If 48.18% of Ag exists as Ag-109 (108.9047 u), what is the identity and the atomic mass of the other isotope? |

## How many joules of energy are necessary to heat the steamA sample of h20 with a mass of 46.0 grams has a temperature of -58 degrees celcius. how many joules of energy are necessary to heat the steam from 100 degrees celsius to 114 degrees celcius. |

## Explain how many grams of reactant remainsHow many grams of each reactant remains after the reaction is complete and how many grams of each product is produced |

## Determine the root-mean-square speed of co2Determine the root-mean-square speed of CO2 molecules that have an average kinetic energy of 4.21*10^(-21) J per molecule. |

## Explain presence of aldehyde groupPresence of Aldehyde Group, An excellent way to identify the presence of an aldehyde group is by 1H NMR. The chemical shift of the aldehydic proton occurs in the 9-10-ppm region |

## What mass of co2 is producedSodium carbonate reacts with hydrochloric acid as shown below in an unbalanced chemical equation. What mass of CO2 is produced from the reaction of 2.94g Na2CO3 with excess HCL |

## Find how many grams of gold are in the oceanan average concentration of dissolved gold of 5.8*10^?9 g/L. (a) How many grams of gold are in the ocean? (b) How many m^3 of gold are in the ocean? |

## Explain fructose solution with a concentrationExplain fructose solution with a concentration f 80mg/ml, but need to take 3.5L of fructose solution with a concentration of 300 mM. |

## Calculate the densityA sample of an unknown metal has a mass of 35.4 grams and a volume of 3.11 centimeter cube. calculate the density. |

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