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In the temperature range from 40 K to 90 K, a certain amount of liquid has a temperature dependent heat capacity that is given by Cp = 18.5 J K?1 + T × 0.24 J K?2. Determine the enthalpy change resulting from heating this sample from 58.0 K to 72.0 K at a constant pressure.
If the heat capacity of the calorimeter was 25 J/C, what would the change in enthalpy (delta H rxn) for this reaction be
Silicon tetrafluoride reacts with F- to produce the hexafluorosilicate ion, SiF6 2-. GeF4 behaves similarily, but CF4 does not. (A) Draw Lewis structures for SiF4, GeF6 2-, CF4. What is the hybridization of the central atom in each species
In the simulation, set the temperature of the sample gas to 304 . Click on the "Run" button and observe how the number of moles of the gas varies with an increase in the gas's volume
What is the osmotic pressure of a solution made from dissolving 30.0 g of glucose, C6H12O6, in 700 mL of water at 21.0C
Vanadium(III) can reduce nitrate ion (NO3-) to nitrite ion (NO2-), producing VOCl3 also Write the BALANCED chemical equation for this reaction.
Draw the initiation step, one propagation step, and the disproportionation-termination step for the chain-growth polymerization of vinylidene difluoride (1,1-difluoroethene).
A 25.5g aluminum block is warmed to 65.3 degC and plunged into an insulated beaker containing 55.0g water initially at 22.3 degreeC. The aluminum and the water are allowed to come to thermal equilibrium.
If the hydrated cobalt(II) ion complex from Part C were refrigerated, what would be your prediction for the color of the solution
The mass percent of an element in a compound is the mass of the element (total mass of the element's atoms in the compound) divided by the mass of the compound
If you have 100ml of a .1M tris buffer at PH 8.3 and you add 3.0 ml HCl what will be the new pH? (PKa of Tris = 8.3)
What is the heat of reaction (kJ) per mole of acid? Assume the mixture has a specific heat capacity of 4.18 J/(g·K) and that the densities of the reactant solutions are both 1.00 g/mL.
A 5.00-L reaction vessel contains hydrogen at a partial pressure of 0.588 atm and oxygen gas at a partial pressure of 0.302 atm. Which element is the limiting reactant in the following reaction? 2H2(g) + O2 (g) -> 2H2O(g)
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