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What is the density of chlorine gas (CI2) at STP when the molar mass is 70.91 g/mol?
The following compounds, listed with their boiling points, are liquid at -10 degrees celsius: butane, -0.5 degrees celsius: ethanol, 78.3 degrees celsius: toluene, 110.6 degrees celsius.
The binding energy of electrons to a chromium metal surface is 7.21 × 10-19 J. What is the longest wavelength of light (in nm) that will eject electrons from chromium metal
What is the density of a block of marble that occupies 253 cm3 and has a mass of 752 g?
Water is unique because it is less dense as a solid than as a liquid. How can you account for this unusual attribute
The student first overflowing a buret with NaOH solution. The student then placed an appropriate volume of unknown HCL into a 250mL flask as well as added drops of indicator. Find out the concentration of an unknown HCL solution
Calculate the ratio of [Ca2+] to [Fe2+] in a lake in which the water is in equilibrium with deposits of both CaCO3 and FeCO3, assuming that the water is slightly basic and that the hydrolysis of the carbonate ion can therefore be ignored.
Ethanol (C2H5OH) is produced from the fermentation of sucrose in the presence of enzymes. C12H22O11(aq) + H2O(g) > 4 C2H5OH(l) + 4 CO2(g)
you will be using 1.4 grams of salicylic acid to make aspirin. salicylic acid is the limiting reagent and one mole of
describe the crystal lattic structures you examined,indicating the number of positine ions surrounding each negative ion,and vice versa
What is the persent yield of diethyle ether. b, During the proecess 45% of ethanol that did not produce diethyl ether react by the side reaction. What mass of ethylene is produced
Assume that the specific heat of the substance at P=25 bar is temperature independent and equal to c_p=4.20 kJ/kg*K. Sketch the P-v and T-s diagrams of the cycle.
Assuming that radiation with lambda = 15.0 {rm cm} is used, that all the energy is converted to heat, and that 4.184 {rm J} is needed to raise the temperature of 1.00 {rm g} of water by 1.00 ^circ {rm C}.
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