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the standard enthalpy change for the reaction: 2Hg(l)+ O2(g)= 2Hgo(s)is -211kj
what is the standard enthalpy formation of Hgo?
What quantity of heat would be evolved if 75.00g of mercury (Hg=200.59), (O=16.00) was burned in oxygen?
Use of fossil fuels - Should we be burning the raw materials for medicine and polymers? Where will we be in 50 years on this issue?
An aqueous solution of etanol, C2H5OH is 19% ethanol by mass and has density of 0.9700gml. Calculate the molality, molarity of the ethanol solution.
A proton in a linear accelerator has a de Broglie wavelength of 117pm. what is the speed of the proton?
If 175 g of X reacts completely with diboron trioxide to produce 2.43 mol of B4X3, what is the identity of X?
Hydrogen gas was cooled from 150C to 50 C. It's new volume is75 mL. What was it's original volume?
Draw the energy profile diagram to show the possible intermediate and the transition states.
Consider the following thermochemical equation: CH4(g) + I2(g) --> CH3I(g) + HI(g) Enthalpy Value = +23 kJ
What will happen to the equilibrium as OH- ions are added?
A laser pulse with wavelength 555nm contains 4.40mJ of energy. How many photons are in the laser pulse.
calculate the average moles of ascobic acid in the pipetted sample used for titration d)Calculate the average moles of ascobic acid in the crushed tablet.
How many grams of methane [CH4(g)] must be combusted to heat 1.00 kg of water from 25.0°C to 90.0°C, assuming H2O(l) as a product and 100% efficiency in heat transfer?
Calculate molality and mass percent of alcohol in the mixture. A solution of ethanol, C2H5OH, in water has a concentration of 1.996 mol L-1. At 20.0 ºC its density is 0.9677 g mL-1
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