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A proton with a speed of 3.0x10^5 m/s falls though a potential difference V and thereby increases its speed to 9.0x10^5 m/s. Through what potential difference did the proton fall?
Calculate the quantity of energy produced per mole of -235 (atomic mass = 235.043922 ) for the neutron-induced fission of -235 to produce -137 (atomic mass = 136.9253 ) and -97 (atomic mass = 96.910950 ).
Calculate the ionic strength of a solution that is 0.08 M in La(NO3)3 and 0.06 M in Fe(NO3)2.
A 125.0g sample of copper is initially at 25.0oC. It absorbs 12.50 kJ heat from its surroundings. What is the final temperature to the nearest tenth degree? Specific heat copper = 0.3874 J/goC.
Formula Molar Mass (g/mol) ?G°f (kJ/mol) ?H°f (kJ/mol) S° (J/(K mol)) I2(g) 253.812 19.33 62.44 260.69 I2(s) 253.812 0 0 116.14 T = (NA) K R = 8.314 J/(K mol) Calculate the temperature (K) at which the equation as written is at equilibrium.
Write a molecular equation for the reaction sodium bromide and sulfuric acid (states of reactants and products must be shown)
What is the main difference between the first titration in Part A and the second titration in Part B
a sample of hydrated salt of 1.15 grams znso4.xh2o is dissolved in h2o and the sulfate ion is precipitated by adding an
question 153 grams of metal have a specific heat of 0.061 calg c and at a temp of 99.1c is added to 85.0 grams of water
Ethanol (CH3CH2OH), the intoxicant in alcoholic beverages, is also used to make other organic compounds. In concentrated sulfuric acid, ethanol forms diethyl ether and water
The volumes listed correspond to the ½ equivalence point, equivalence point, 1 ½ equivalence point, and 2 equivalence point. The pH will equal pKa2 at the 1 ½ equivalence point, which is 11.55. Therefore, the [H+] = 10^(-11.55) = 2.81 x 10-12
The heat of formation of Al2O3(s) is change Hf= -1669kJ/ /mol. a.) Calculate the heat evolved when 3.47 g of Al burns in oxygen. b.) Find the mass in grams of Al that burns when 1039 kJ are evolved.
At a certain temperature, the equilibrium constant for the reaction 2HI(g)39. At a certain temperature, the equilibrium constant for the reaction 2HI(g) H2(g) + I2(g) is 0.49.
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