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The uncertainty (standard deviation) in a single buret reading for a 50 ml buret is about +/- 0.02 ml. Two readings (initial volume and final volume) are required to deliver a specified volume or titrant. For a delivered volume of 32.65ml, compute the uncertainty in the volume of titrant delivered. Report your result as the relative standard deviation in parts per thousand, to the nearest .1ppt
The following reaction is used in the haber bosch process for the synthesis of ammonia N2(g)+3H2(g)->2NH3 If the initial rate of appearance of NH3 is 0.625Ms^-1 calculate the initial rate of disappearance (in Ms^-1) of H2
If 6.0 moles of ethene and 6.0 moles of hydrogen are introduced into a 2.0 L sealed vessel and allowed to equilibrate at 200ºC, what is the equilibrium concentration of the ethene
200 mL of 0.150 M acid HA are mixed with 100 mL of 0.0800 M NaOH. Calculate the titration constant, kt, of the resulting reaction. Ka = 1.0 x 10^-5
Draw three non-equivalent Lewis structures for the nitrous N2O molecule. Show all non-zero formal charges. Which structure(s) is (are) the most important
determine the molarity of the naohsodium hydroxide solution. in an acid-base titration 22.13 ml of a sodium hydroxide
The first ionization energy for rubidium is +403.0KJ/mol. How much energy would be required to convert 17.1g of gaseous rubidium to its gaseous +1 monatomic ion at constant temperature
Calculate the energy change in kilojoules per mole when lithium atoms lose an electron to bromine atoms to form isolated Li+ and Br- ions. [The Ei for Li(g) is 520 kJ/mol; the Eea for Br(g) is -325 kJ/mol.]
A 50.0 kg mixture of salt and water is 15.0% (by mass) salt. give the mass of salt and water in the mixture
If 25 mL of 0.060 M HClO4 is mixed with 50 mL of 0.060 M KOH, what will be the resulting pH?
a system conducts 192 cal of heat to the surroundings while delivering 322 cal of work. what is the change in internal energy of the system (in cal)?
For the reaction 2CH2O(g) + O2(g) ? 2HCOOH(l), if 4.19 × 1022 molecules of formaldehyde (CH2O) react with excess oxygen, what is the theoretical yield of formic acid (HCOOH)
The saturated calomel electrode (S.C.E.) is one commonly used reference electrode, with a potential of 0.242 V versus the S.H.E. Using a table of standard reductions, determine what the potential of each reduction below would be versus the S.C.E.
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