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Butane has a heat of vaporization of 22.44 kj/mol and a normal boiling point of -0.4 C. A 250 ml sealed flask contains 0.75 g of butane at - 22C.
How much butane is present as a liquid?
Assume that methane is an ideal gas, the specific heat capacity of water to be constant and equal to 4.184 J/g/K over this temperature range, and the density of water to be 1.0 g/cm3. The combustion of methane is given byCH4 + 2 O2 ? CO2 + 2 H2O ?..
consider the reaction by which hbr is added to ethene to give bromoethane. write the mechanism of the reaction using
Find the number of faradays passed through the circuit. What mass of Ag is deposited at the cathode in the second cell. What mass of Fe(NO3)3 might be recovered from the third cell solution
Draw the Lewis Structure for a Nitrate Ion (NO3-1). Assign the formal charge for the central atom, Nitrogen. What is that formal charge?
Ammonium nitrate is a common ingredient in chemical fertilizers. Use the reaction shown to calculate the mass of solid ammonium nitrate that must be used to obtain 0.200 L of dinitrogen oxide gas at STP.
Empirical formula Pt(NH3)2Cl3. Sketch at least four isomers which correspond with the given empirical formula and have a molecular mass of 670 g/mol. What are some of these isomers and in a complex ion, can a chlorine atom be bonded to two other a..
Calculate the change in energy required in making 70.0 mL of water from its elements under standard conditions
Consider the chemical reaction 2NH3(g) N2(g) + 3H2(g). The equilibrium is to be established in a 1.0 L container at 1,000 K, where Kc = 4.0 ? 10-2. Initially, 1,220 moles of NH3(g) are present. Estimate the equilibrium concentration of H2(g).
What is the gauge pressure of the gas in this mercury manometer
Solid benzoic acid, C6H5COOH(s), is often used to determine the heat capacity of a bomb calorimeter, because the constant volume heat of combustion of this compound is known with high precision
calculate the mass of nitrogen dissolved at room temperature in an 80.0 rm l home aquarium. assume a total pressure of
Aspirini has a density of 1.40 g/cm^3 what is the volume (in cubic centimeters) of an aspirin tablet weighing 2.8x10^2mg
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