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Determine the nuclear binding energy of uranium-234 atomic mass = 234.040947 amu in units of joules per nucleon. [Data- neutron mass = 1.674928 × 10-24 g; proton mass = 1.672623 × 10-24 g; electron mass = 9.109387 × 10-28 g; NA = 6.0221367 × 1023 /mol; c = 2.99792458 × 108 m/s]
The solution filtered , then we took 25 mL of this unknown acid for titration. we use NaOH base for titration ,the volum of titrated base when it reach the equivalence point was 3.2 mL . and the concentration of NaOH is 0.1 M.
What volume of H2 (at 25oC and 1.00 atm ) can be produced by reaction of 161 g Fe and 202 g of HCl? (Atomic weights: Fe = 55.85, Cl = 35.45, H = 1.008)
silver consists of two major isotopes with the following percent abundances and atomic masses 107ag 51.84 and 106.90509
Decide whether aqueous solutions of the salts a-h are acidic / basic / or neutral. For each ion that hydrolyzes write the hydrolysis equation. acidic/basic/neutral and hydrolysis equation
Chlorine gas can be produced commercially by passing an electric current through a con- centrated solution of sodium chloride (brine).
Ozone molecules in the stratosphere absorb much of the harmful radiation from the sun. How many ozone molecules are present in 1.00 L of air under the stratospheric ozone conditions of 227 K temperature and 1.89 * 10^-3 atm pressure
Hexane has a density of 0.659 g/mL. How many milliliters would a student need to pour in order to get 49.5 g of hexane?
Calculate the value of the reaction quotient Q. (b) Is the system at equilibrium? If not, predict which way (right or left) the reaction will proceed to reach equilibrium.
a 720-mL sample of water was cooled from 60 degrees celsius to 10 degrees celsius. How much heat was lost?
A certain quantity of electricity is passed through a series of solutions containing AgNO3, CrCl3, ZnSO4, and CuSO4. a) If 1.00 g of Ag(s) was deposited in the first solution, how many grams of metal were deposited in each of the remaining solution..
500.0 mL of 0.120 M NaOH is added to 575 mL of 0.200 M weak acid (Ka = 3.84 × 10-5). What is the pH of the resulting buffer. HA(aq) + OH^-(aq) ---> H20(l) + A^- (aq) pH=
An oxalic acid H2C2O4 solution of unknown concentration is standardized against 0.110 M sodium hydroxide. It takes 34.67 mL of the NaOH solution to neutralize 25.00 mL of the oxalic acid solution. Explain what is the molarity of the oxalic acid so..
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