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Win 4.261 g of a-hydrocarbon, CxHy, were burned in a combustion analysis Apparatus, 13.37 g of CO2 and 5.474 G of H2O were produced. And separate experiment, molar mass of the compound was found to be 42.08 g/mol. Determine the empirical and molecular formula of the hydrocarbon. Enter the elements in the presented in question
a ballon filled with 0.505 mol of gas contracts reversibly from 1.0 L to 0.10 L at a constant temperature of 5.0 degree celsius. In doing so it loses 1270 J of heat. calculate w, q, and U for the process.
calculate the amount of heat transferred when 2.7 g of rm mgrm s reacts at constant
Problem- An 66.39 g sample of aluminum is placed on a 42.56 g sample of copper initially at 124.96oC. If the heat is only transferred between the metals (with no loss to the surroundings) and the final temperature of both metals is 44.29oC, what i..
The dimensions of a box are 1.00 foot by 279 mm by 5.5 inches. What is the volume of the box in mL
If the water had been heated from 273 to 373 K by first bringing it into contact with a reservoir at 323 K and then with a reservoir at 373 K, what would have been the entropy change of the universe?
Calculate the molarity (M) of a solution of the strong base RbOH if the pH is 10.4.
The barometric pressure was 725 torr. A sample of distilled water is at 26.2 C. What is the volume of 1.000 g of this water corrected to 20 C
Calculate which of the two reactants is the limiting reagent. Calculate also the number of moles of NO2 produced. What reactant is left over and how much of it is left over?
What mass of sold LA (IO3)3 (663.6 g/mol) is formed when 37.05 mL of 0.250 M La+3 are mixed with 95mL of 0.302 M IO3-? Calculate the molar concentration of the unreacted ion (i.e, LA+3 or IO3-)
What is the equilibrium constant expression (Ka) for the acid dissociation of nitrous acid HNO2. The equation of interest is
The temperature of the stratosphere is -23.0 ºC, as well as the pressure due to the zone is 1.4 x10-7 atm. Compute the number of ozone molecules present in 1.00 m3 (1L = 10-3 m3) in the stratosphere.
Five constituionally isomeric monochlorides of molecular formula c6h13cl are formed (along with a mixture of dichlorides, trichlorides, etc.) What is the most reasonable structure for the starting alkane? why?
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