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Potassium hydrogen phthalate, has a molecular mass of 204.2 g/mole. How many moles of potassium hydrogen phthalate are in a 0.500 gram sample?
the rate of disappearance of HBr in the gas phase reaction 2HBr(g)-->H29(g)+Br2(g)is .301 at 150 degrees celsius. what is the rate of appearance of Br2?
A 100,000 gal tank is 75% full of liquid containing 60,000 lb of solid in suspension. Water flows into the tank at a rate of 20,000 gal/hr. Water and solids are drawn from the bottom of the tank at a rate of 14,000 gal/hr.
A gas is compressed from 68.2 L to 8.0 L at 0.70 atmospheres? In addition a total of 3300 J of heat are gained from warmer surroundings. What is the change in internal energy in kJ
If you purchased 1.11 muCi of sulfur-35, how many disintegrations per second does the sample undergo when it is brand new
In the lower troposphere, ozone is one of the components of photochemical smog. It is generated in air when nitrogen dioxide, formed by the oxidation of nitrogen monoxide from car exhaust, reacts by the following mechanism.
calculate the radius of a chloride ion. find values reported for the ionic radii or sodium and chlorine in a refernce book, and compare them with the values you determined. is the differnece significant?
CH3CH2OCH2CH3 can be synthesized by an SN2 reaction. Draw the structures of the alkyl chloride and nucleophile that will give this compound in highest yield
From the solubility data given, calculate the solubility products for the following compounds: a) SrF2, 7.3 x 10^-2 g/L b) Ag3PO4, 6.7 x 10^-3 g/L
Draw a diagram of the electrochemical cell, labeling all electrodes and solutions. What is the pH in the Pt | H+ | H2 half-cell. What is the value of the equilibrium constant for the reaction occurring in this cell
What mass of NH3 in gm must be used to produced 54 tons of HNO3by ostwald process assuming on 80%yield in each step. ---------gm of NH3
A student prepares benzoic acid by hydrolyzing 6.47g of methyl benzoate (FW 136.15 g/mol) using excess sodium hydroxide. If the student recovers 3.71g of benzoic acid
estimate the enthalpy change for the reaction between 1 mol c2h5oh as liquid ethanol, a fuel made by fermenting corn, and o2 to yield co2 and h2o under standard conditions by using bond enthalpies,
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