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The isothermal compressibility of lead is 2.21x10^-6 atm^-1. Express this value in Pa^-1. A cube of lead of side 10 cm at 25C was to be inserted in the keel of an underwater exploration TV camera, and its designers needed to know the stresses in the equipment. Calculate the change of the volume of the cube at a depth of 1.000km (disregarding the effects of temerature). Take the mean density of sea water as 1.03g cm^-3. Given that the expansion coefficient of lead is 8.61x10^-5 K^-1 and that the temperateure where the camera operates is -5C, calculate the volume of the black taking the temperature into account too.
the quantity 432 mg of a monoamino monocarboxylic amino acid isobserved to consume 7.39 meq of acid and base in the
2ch3oh3o2 gives 2co24h2o. calculate the heat of combustion of one mole of methanol under standard
Determine the number of grams H2 formed when 250.0 mL of 0.743 M HCl solution reacts with 3.41 x 1023 atoms of Fe according to the following reaction. 2 HCl(aq) + Fe(s) ? H2(g) + FeCl2(aq)
Calculate the electrode potential of the following half cell if it was at standard conditions. Then recalculate how this changes using.
Write the equation showing the S-trans to S-cis equilibrium of the two conformations for a. (E)-1,3-pentadiene b. (Z)-1,3-pentadiene and which equilibrium will favor the s-tans conformation more strongly
A mixture of 7.50 g He and 29.5 g Ne has a pressure of 540. mm Hg. What is the partial pressure of each of the gases?
A 1L steel tank is fitted with a safety valve that opens if the internal pressure exceeds 850 torr. It is filled with helium at 23 oC and 0.991 atm and placed in an oil bath.
A buffer solution was prepared by adding 4.95 g of sodium acetate (NaCH3CO2) to 0.250 L of 0.150 M acetic acid (Ka = 1.75 x 10-5). What is the pH of the buffer
Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 7.0X10^-2 M NaOH.
Determine ?H for the formation of one mole of aluminium(III) oxide, Al2O3(s) from the elements?
Explain why light intensity is dependent on the distance the detector is from the light source. Describe the mathematical relationship.
How many moles of oxygen molecules would be needed to react with 111.2 grams of iron? How many grams of rust would result from this reaction
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