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C3H8(g)+5O2(g)=3CO2(g)+4H2O(g) AHrxn=-2044 kcal
1. calculate the heat energy (in kJ) associated with the complete combustion of all the propane in the tank.
2. is the process exothermic or endothermic?
3. determine the number of moles of CO2 produced.
4. Determine the number of grams of O2 consumed.
The lengths of chemical bonds in H2 and in other compounds formed from hydrogen isotops is about .74 x 10^-10 m. Estimate the bond length in molecules where the muon replaces the electron.
An insulated tank contains half liquid and half vapor by volume in equilibrium. The release of a small quantity of vapor without the addition of heat will cause
Explain how a calibration curve could be used to determine an unknown quantity
Pure liquid water can be supercooled to temperatures below its freezing point. Consider 10 kg of water cooled as a liquid to -10 Celsius. Let's now add a small crystal of ice (whose mass is negligible) as a "seed"
HCl according to the following chemical equation? MnO2+4(HCl) --> MnCl2 + Cl2 + 2(H2O)
The analysis of this compound shows that it contains 41.8 percent C, 4.7 percent H, 37.3 percent O, and 16.3 percent N. Calculate the molecular formula of the compound.
What would the theoretical yield in moles be and how would you calculate that? What would the theoretical yield in grams be and how would you calculate that?
Consider the reaction 2ZnS + 3O2 → 2ZnO + 2SO2. Suppose that you wanted enough O2 to completely react with 500. g of ZnS.
KOH(aq)+ CoCl2(aq) --> KCl + Co(OH) what are the states of matter for the products?
.799 g sample of an unknown substance has dissolved in 15.6 g of benzene. The freezing point of the solution was 4.075 C. The freezing point of pure benzene is 5.455 C. For benzene, Kf= 5.065 C/m, and Kb=2.61 C/m. Assume that the solute is a nonel..
Derive the general expression for the work per kilomole of a van der waals gas in expanding reversibly and at a constant temperature
Draw any resonance form and state whether it is more or less stable than the original. ( if this is explained i will reward all points)
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