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Which of the following will change the equilibrium constant? a. changing temperature, b. nothing changes the value of keq, c.varying the ititial concentration of reactants, d. varying the initial concentration of products, e. changing the volume of the reaction vessel
A scientist wants to make a solution of sodium phonsphate for a lab experiment. How many grams of sodium phosphate will be needed to produce 475 ml of solution that has a concentration of Na+ ions of 1.50 M?
the explosive tnt is composed of 37.0 carbon 2.2 hydrogen 18.5 nitrogen and the rest oxygen. if the molar mass of tnt
Draw a sketch, roughly to scale, of the potential energy diagram for a system in which Ea= +80kJ and ?H= -20kJ. Label the axes, reactants
A sample of a gas occupies 1470 mL at 60.7?C and 740 torr. What volume would it occupy at the same pressure and 450?C.
A particular reactant decomposes with a half-life of 115 s when its initial concentration is 0.353 M. The same reactant decomposes with a half-life of 225 s when its initial concentration is 0.180 M.
Propose a synthesis of teflon (polytetraflauroethlene). What starting materials are required? What type pf reaction would be used to achieve polymerization
the vapor pressure of water at 90.0 is 526.8mm hg what mass of ethlene glycol (mw 62.7gmol) when added to 1.50 kg of warer will lower the vapor ptessure
The standard enthalpy of atomization of an element is the energyrequired to convert 1 mole of an element in its most stable form at25 centigrade to 1 mole of monatomic gas. Given that the standardenthalpy of atomization for sodium is 108.4 kJ mol-..
How many moles of SCN-1 are there in 10.0 mL of a 0.000100 M soulution? How many grams. Show me step by step how to do these problems.
a sealed container contains 6 mol of hydrogen and 1 moles of nitrogen gas. if the total pressure in the container is
Calculate the mass of Sodium Nitrate required to prepare 50cm3 of 0.2 moll-1 solution
The solubility of a certain compound in ice-cold water is .19g in 100mL. its solubility in hot water is 3.35g in 100mL.
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