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Compute the impact velocity necessary to heat and completely melt a lead bullet initially at 60 C when it strikes a massive steel plate. Overlook heat transfer to the plate. The melting point of lead is 327.5 C. Explain the enthalpy of fusion of lead is 4.786 kJ/mol as well as its specific heat is 127 J/kg/K.
Enter the correct numerical value to 2.0% precision. Express scientific notation like 4.294E-15
Estimate the boiling point elevation of a saturated solution of LiF at 100 degrees Celsius, assuming it undergoes complete dissociation. The solubility of LiF is 230 mg/100 g of water at 100 degrees celsius, and the boiling point constant of water..
calculate the amount of energy in kilojoules needed to change 153g of water ice at -10 C to steam at 125 C.
gas cylinder a has a volume of 48.2l and contains n2g at 8.35 atm at 25 degrees c. gas cylinder b of unknown volume
a 1.00 L solution contains 4*10^-4 M Cu(NO3)2 and 1.6*10^-3 M ethyleneddiamine. the Kf for Cu(en)2^2+ is 1*10^20, what is the concentration of Cu+2 in the solution
Calculate the volume of oxygen required to burn 5.00L of propane gas, C3H8 to produce carbon dioxide and water, if the volumes of both the propane
An organic acid has a molecular weight of 192. A 100 mg sample of this acid was burned in an excess of oxygen in the apparatus. The only compounds that make up this acid are carbon, hydrogen and oxygen.
If the heat of fusion os X is 80.0 J/g, the heat of vaporization is 190.J/g, and if 3.5 J are required to warm 1 g of X each degree, how much energy will be needed to accomplish the change in a
describe and explain the possible effect on your results of the following experimental errors or variations. in each case, specify the component(s) whose percentage(s)
What mass of NaOH is needed to precipitate the Cd^{2+} ions from 38.0 mL of 0.480 M Cd(NO_3)_2 solution
How many grams of magnesium metal will react completely with 4.8 liters of 5.0 M HCl?
The rate constant of a first order reaction is 4.45 x 10^-2 s-1 at 35 degrees C. What is the rate constant at 77 degrees C if the activation energy for the reaction is 60.2 kJ/mol
100g of water (specific heat=4.184 J/g*C) and 100g of a metal sample (specific heat=0.397 J/g*C) are heated from 25 degrees celcius to 75 degrees celcius. Which substance required more thermal energy to reach 75 degrees celcius?
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