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1. Suppose that you suspend a 10kg mass of iron from a height of 200meters. The outside temperature is 300K
a. What is the kinetic energy of the mass just before it hits the ground?
b. What is the velocity of the iron mass?
c. What is the final temperature of the mass if all of its kinetic energy at impact is transformed into internal energy? (C sub p) =25.1mol-1K-1)
2. The standard molar heats of combustion of the isomers m-xylene and p-xylene are -4553.9KJmol-1 and -4556.8KJmol-1 respectively. The chemical formula for xylen (both isomers) is C8H10.a. Write a balanced chemical reactions for the combustion of both materials.b. Using the data provided and your two reactions from
(a), and Hess' Law, dtermine the Enthalphy of reaction for the conversion of m-xylene (one headed arrow to p-xylene
3. Show that for a cander Waals gas C sub p - Csubv= ?R( bar on each
C) where 1/?=1-((3vsub r-1)2/4v3sub rTsub r)
manganese makes up 1.3 x 10-4 by mass of the elements found in a normal healthy body. how many grams of manganese
Consider following cell. SCE stands for the saturated calomel reference electrode, which has a fixed potential of 0.244 volt. Pt|VOSO4 (0.0824 M), V2(SO4)3 (0.395 M), HClO4 (0.0100 M) || SCE Calculate the cell potential.
The cell reaction is spontaneous with a standard cell potential of 5.85 V. B. The cell reaction is spontaneous with a standard cell potential of 0.11 V. C. The cell reaction is nonspontaneous with a standard cell potential of -0.11 V. D
Add electron pairs to show the bonds between the atoms. Assigning the remaining valence electrons so that each atom has an octet of electrons, write the Lewis structure for COCl2 in the box.
Use the appropriate standard reduction potentials to calculate the value of k at 25 degrees celcius for this reaction NiO(s)+2Cl-(aq)+4H+(aq)->Cl2(g)+Ni^+2(aq)+2H2O(l)
one important application of reverse osmosis is the desalination of seawater. to extract pure water from seawater using
How many molecules of substance B are produced when 30.0 g of substance A reacts? The molar mass of substance A is 23.5 g/mol. A) Convert the mass of A to moles
What is the pH of a solution created by mixing 219 mL of a 1.64M NaHSO3 solution with 163 mL of a 1.81 M Na2S)3 solution
Describe the chemistry involved in the current indstrial preparation of adipic acid, specifically listing the major by-product
The molar solubility of lead(II) iodate in water is 4.0 ? 10-5 mol/L. Calculate Ksp for lead(II) iodate
Calculate percent recovery of panacetin from the individual masses of its mictures, sucrose (.044g), aspirine (.093), and the unknown (.339).
The saturation value of DO is 8.5 mg/L. The deoxygenation coefficient (kd) is 0.61/d, and the reaeration coefficient (kr) is 0.76/d. Assume complete and instantaneous mixing of the sewage and river. What is the minimum DO downstream
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