1. Predict the values which should be expected for the constants Ccharles and Cb
ID: 790027 • Letter: 1
Question
1. Predict the values which should be expected for the constants Ccharles and Cboyle assuming 5.0 mL of air at 25 C and 1.0 atm. (use L for volume).
2. Suppose you determine that the mass of 5.0 mLL of air at 25 C and 1.0 atms is .0060grams. Using an average mular mass of air of 29.0 g/mol, determine the number of moles of air contained in this 5.0 mL sample.
3. Use your answers to problems 1 and 2 above to calculate the value of R using the formula (Cboyle)(Ccharles)/nV = R. (L for unites of volume).
Explanation / Answer
1) boyles constant = PV
= 1*5 = 5 ml.atm
charles constant = v/T = 5/298 = 0.0167 lt/k
2) PV = nRT
1*5 = n *0.0821*10^3*298 (gas constant = 0.0821 lit .atm)
n = 204 moles of air
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