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6.70 g sample of SiH4 and an excess of oxygen were placed in a reaction container surrounded by 2.80 kg of water. The initial temperature of the water was 12.50°C. At the end of the reaction, the temperature of the water was 49.00°C. Assume that the heat was completely absorbed by the water and no heat was absorbed by the reaction container or the calorimeter or lost to the surroundings. Calculate the ?Hrxn per mole of SiH4. The specific heat of water is 4.184 J/g·°C.
Semi-Empirical Expression for a Dilute Real Solution, Starting with the definition of osmotic pressure
Cobalt Chloride in varying concentrations Spectrophotometer set to a Wavelength = 510 nm % Transmission = experiment #1 = 31.62, experiment #2 = 89.13 and experiment #3 = 98.86
Determine the heat of combustion per gram of octane and the heat of combustion per mole of octane?
If the final solution has a bromide ion concentration of 1.26 M, what was the concentration of the SrBr2 solution? (the volumes are additive) I dont understand how to write the reaction
given the equation 2C2H6(g)+7O2(g)->4CO2(g)+6H20(g) How many grams of oxygen are needed to react with 4.00 moles of C2H6?
Important information about Second Order Reaction, The reaction of CH3CH2NO2 + OH- --> H2O + CH3CHNO2 - is a second order and k at 273 K
an aqueous CaCl2 solution has a vapor pressure of 81.1 mmHg at 50 C. The vapor pressure of pure water at this temperature is 92.6 mmHg.
How much heat in kilojoules is needed to bring 1.30 kg of water from 33.7 to 97.1 °C (comparable to making four cups of coffee)?
Reactions of Alcohols, Show how ethanol and cyclohexanol may be used to synthesize cyclohexyl ethyl ether using tosylation followed by Williamson ether synthesis.
Calculate the ratio of HCL molecules in the first excited rotational state to those in the ground state @ 25 C. Assume an equilibrium bond distance of 1.275 angstroms.
The most common source of copper (Cu) is the mineral chalcopyrite (CuFeS2). How many kilograms of chalcopyrite must be mined to obtain 395 g of pure Cu?
The tire is filled with dry air at sea level and a temperature of 60 degree F to 32 lb/square inch.standard sea level pressure is 101325 Pa at 0 degree C (STP).
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