A mixture of gases is analyzed and found to have the following composition: CO2 12.0%
CO 6.0%
CH4 27.3%
H2 9.9%
N2 44.8%
a) How much will 3lb moles of this gas mixture in weight

Aturning operation is performed with following conditions: rake angle of 12°, a feed of 0.35 mm/rev, and a depth of cut of 1.1 mm. the work piece is aluminum alloy 6061 with t6 heat treatment (a16061-t6). the resultant chip thickness was measured to be 1.0 mm. estimate the cutting force, fc. use shear stress of 207 mpa and coefficient of friction on the tool face of 0.6.