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Water has a specific heat of 4.184 J/g x Celsius, weighs 130.00 g, and goes from 25 to 28 degrees Celsius when a metal is placed in the water. The metal weighs 45.00 g, and the temperature changes from 23 to 89 degrees Celsius. Calculate the specific heat of metal.
The density of liquid oxygen at its boiling point is 1.14kg/L , and its heat of vaporization is 213kJ/kg. How much energy in joules would be absorbed by 4.0 L of liquid oxygen as it vaporized.
standard-state free energy of formation data to calculate the acid-dissociation equilibrium constant
There are two common polymorphs of zinc sulfide: cubic and hexagonal. Based on the analysis of Madelung constants alone, predict which polymorph should be more stable.
A zero-order reaction has a constant rate of 1.90×10-4 . If after 40.0 seconds the concentration has dropped to 6.50×10-2 , what was the initial concentration?
Explain the difference between accuracy and precision, as it pertains to experimental data. The best way to do so is to define
Hydrogen is produced when methane(CH4) reacts with water. The other product is CO2. Using 80.0g of methane and 16.3g of water, how many liters of H2 can be produced at STP? what is the limiting reactant?
A copper wire (density = 8.96 g/cm3) has a diameter of 0.44 mm. If a sample of this copper wire has a mass of 50. g, how long is the wire?
The following results were obtained for the determination of sulfur in another coal sample. The average for 3 trials was 2.28 %S. Report the 95% confidence limits for the average sulfur content in this sample based on the knowledge from extensive ..
what mass of calcium carbonate is required to react with 137.8 mL of a 0.6943 M sulfuric acid solution?
what is the concentration of H+ ions in a solution of hydrocholoric acis that was prepared by diluting 15.0 mL of concentrated (11.6 M) HCL to a filal volume of 500 mL?
Determine the number of bonding electrons and the number non-bonding electrons
A flask is charged with 0.140 mol of A and allowed to react to form B according to the following hypothetical gas-phase reaction. A(g) B(g) The following data are collected. times (s) 0 40 80 120 160 moles of A 0.140 0.068 0.049 0.031 0.019 (a)
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