Concrete cures best when poured in temperatures of _____.


a. 50°F to 60°F
b. 55°F to 59°F
c. 60°F to 80°F
d. 80°F to 90°F


c. 60°F to 80°F

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If you consider the ideal gas law to be an acceptable approximation for substances that have compressibility factors within 10% of 1 (i.e., between 0.90 and 1.10), determine the range of acceptable pressures for ideal gas behavior for a gas with a temperature of 300 K if the gas is (a) hydrogen, (b) oxygen, and (c) carbon dioxide.

Given: T = 300 K, 0.9 ? Z ? 1.10 What will be an ideal response?

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Power to the entire residence is shut off at the main service disconnect located _____.

a. in the basement or unfinished crawlspace b. at the panelboard c. at the service drop d. at the main branch circuit

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Electric switching devices such as contactors and relays rarely cause electrical problems.

Answer the following statement true (T) or false (F)

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A lawn is to be established vegetatively. The sprigging rate is 5 bushels of stolons per 1,000 ft.2 . The site is 160 feet long and 145 feet wide. How many bushels of sprigs are needed?

What will be an ideal response?

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