Cylinder Assembly

Posted on | August 26, 2008 | 1 Comment

Cylinder Assembly

How much will it cost to have a cylinder head assembly installed?

Just give a ball park of what it should cost, I have 94 plymouth acclaim 3.0L v6

the very minimum i'd say a grand

Cylinder Head Assembly 6.5 L Diesel Engine

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Calculate the partial pressure of each gas. ?

To prevent the presence of air, noble gases are placed over highly reactive chemicals to act as inert "blanketing" gases. A chemical engineer places a mixture of noble gases consisting of 5.83 g of He, 14.7 g of Ne, and 36.8 g of Kr in a piston-cylinder assembly at STP. Calculate the partial pressure of each gas.

5.83 g of He = (5.83)/(4.003) mol = 1.457 mol = n(He)
14.7 g of Ne = (14.7)/(20.180) mol = 0.728 mol = n(Ne)
36.8 g of Kr = (36.8)/(39.098) mol = 0.941 mol = n(Kr)

total moles of gas in cyclinder, n(tot) = n(He)+n(Ne)+n(Kr) = 3.126 mol.

Dalton's Law of Partial Pressures states

p = p(X1) + p(X2) + ... where p is total pressure and p(Xi) is the partial pressure of gas Xi. The system is in baroequilibrium with its surroundings at STP. STP indicates 100 kPa and 0 °C.

Also, p(Xi)/p = n(Xi)/n(tot) therefore partial pressures p(Xi) = pn(Xi) / n(tot)

So
for He: p(He) = (100)(1.45)/(3.126) = 46.5 kPa
for Ne: p(Ne) = (100)(0.728)/(3.126) = 23.3 kPa
for Ne: p(Kr) = (100)(0.941)/(3.126) = 30.1 kPa

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