Which product of combustion is NOT present during complete combustion?
A. CO2
B. water vapor
C. CO
D. nitrogen
Answer: C
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Refer to Exercise 12 in Section 3.2. Assume that 
= 50 ± 1 MPa,w = 1.2 ± 0.1 mm, and k = 0.29 ±0.05 
.
a. Estimate ?, and find the uncertainty in the estimate.
b. Which would provide the greatest reduction in the uncertainty in 
: reducing the uncertainty in ?0 to 0.1 MPa, reducing the uncertainty in w to 0.01 mm, or reducing the uncertainty in k to 0.025 
?
c. A new, somewhat more expensive process would allow both 
and w to be measured with negligible uncertainty. Is it worthwhile to implement the process? Explain.
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If the fatty acids in a molecule of glycerol contain two or three double bonds, it is considered to be:
a. Saturated c. Polyunsaturated b. Unsaturated d. Polysaturated