If concrete is moist-cured for 7 days, its strength is up to about ____ percent of full strength.
a.60
b.75
c.85
d.95
ANS: A
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The reaction A ? B + C occurs in the gas phase and has an equilibrium constant of KT = 10 at the reaction temperature. Ten moles of A are placed in a reactor and the system is allowed to come to equilibrium at P = 0.2 MPa. The ideal gas model applies. How many moles of A will be in the reactor at equilibrium?
A. 0 B. 0.199 C. 0.465 D. 0.871 E. 10
In a convergent circuit with three switched inputs, the signal at the output is bad when the switch is on the first convergent input. When the switch is changed to second of the convergent inputs the output is correct. What can you conclude?
A) There is a problem between the first convergent input and input to the system. B) The switch could be bad. C) There is a problem between the convergent switch and the output of the system. D) Both A and C. E) Both A and B
Describe how best to judge a class of market beef animals.
What will be an ideal response?
In the accompanying figure, the item identified as number 2 represents a(n) ____ weld.
A. lap B. butt C. corner D. tee