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Isooctane is a standard for gasoline octane rating. A sample weighing .5992 g was found to contain .5040 g of carbon and .09515 g of hydrogen. Its molecular mass is 114. Write the empirical and molecular formulas of isooctane (arranging the symbols in order CxHy).
Which ionic compound would be expected to have the highest lattice energy (a) KO2 (b)NaO2 (c) Li2O (d) RbO2 (15) Arrange the following spectral regions in orger of increasing energy infrared, microwave, ultraviolet visible (a) microwave
A gaseous mixture contains 0.30 mole of co(g), 0.10 mole of H2(g) AND an Unknown amount of CH4(g) in a litre flask. this mixture is in equilibrium at 1200 deg K acc to
A 125g metal block at a temperature of 93.2 degrees Celsius was immersed in 100g of water at 18.3 degrees celsius. Given the specific heat of metal (s= 0.900j/g x degrees celsius)
Three manufacturers are producing carbonated bottled water. One company introduces carbonate by bubbling carbon dioxide into water until CT=10-3 M (equivalent to adding "H2CO3*" until CT = 1 x 10-3 M), a second adds sodium bicarbonate (NaHCO3) unt..
the earth undergoes over a specified period of time the amount of work required to build a house the heat generated by a chemical reaction carried out at constant temperature and pressure the enthalpy released by the combustion of a gallon of gaso..
Give the enthalpies of the reaction P4 (s) + 3O2(g)-->P4O6(s) Delta H= -1640.1 kJ. P4 (s) + 5O2 (g)--->P4O10 (s) Delta H= -2940.1 kJ Calculate the enthalpy change for reaction: P4O6(s) + 2O2 (g)--->P4O10(s)
Sodium lauryl sulfate can be prepared by replacing chlorosulfonic acid with another reagent. What could be used? Show the equations.
Given an equation and an enthalpy change, how much heat is involved when a certain amount of an element
Calculate the vapor pressure of a solution of 20 g of benzene (C6H6) and 20 g of toluene (C7H8) at 90 oC. Is the boiling point of this mixture higher or lower than 90 oC at an atmospheric
whats the thermochemical equation that represent the formation of
If 95 0C of heat are added to a pure gold coin with a mass of 20 gm, what is its temperature change? Specific heat capacity of gold is 0.128 .
a mixture of calcium oxide cao and calcium carbonate caco3 that had a mass of 3.454 g was heated until all the calcium
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