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a mixture of Feo and Fe3O4 when heated in air to constant weight , gains 5 % in its weight . find out composition of mixture.
Explain why the absolute value of the work done by a process can never be greater than the absolute value of the Helmholtz free energy change.
Describe the changes in the sizes of the sodium and chlorine atoms during the following combination reaction. 2Na(s) + Cl2(g) ? 2NaCl(s)
Explain what is entropy and Why are we interested in entropy. Define what information can it tell us about chemical reactions.
Find the ?H for the reaction below, given the following reactions and subsequent ?H values: H2SO4(l) ? SO3(g) + H2O(g)
An empty vial has a mass of 67.77 g. If the vial has a mass of 244.56 g when completely filled with liquid carbon terachloride (d = 1.59 g/cm3), what is the volume of the vial?
the meta and para forms of phenylene diamine are used in the production of Kevlar and Nomex, respectively. Why is a corresponding material with similar properties not made from ortho-phynelene diamine
when comparing the CO2 emissions of various countries?
Osmosis is the process responsible for carrying nutrients and water from groundwater supplies to the upper parts of trees. The osmotic pressures required for this process can be as high as 20.1 atm
Question- A reaction mixture contains 0.114 atm I2, 0.102 atm Cl2 and 0.355 atm ICl. Is the reaction mixture in equilibrium. If not, which direction will the reaction proceed
why is it best to cool the crucible and lid (and sample) in a desiccator rather than on the laboratory bench
How many moles of sodium bicarbonate are contained in 10mL of a 10% aqueous solution
the vapor pressure of pure acetone propanone is 266 torr. when a non-volatile solute is added the vapor pressure of
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