The outer electron shell is known as a(an) ________.

A) Valence ring
B) Unstable shell
C) Distant ring
D) None of these


A) Valence ring

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Which of these requires the most maintenance?

A) bahiagrass B) bermudagrass C) ?carpetgrass D) centipedegrass

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The major migration corridor goes through the plains states in the _____ flyway

a. Atlantic b. Mississippi c. Central d. Pacific

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The operating cost for a pulverized coal cyclone furnace is expected to be $80,000 per year. The steam produced will be needed for only 6 years beginning now (i.e., years 0 through 5). What is the equivalent annual worth in years 1 through 5 of the operating cost at an interest rate of 10% per year?

What will be an ideal response?

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In which of these states would you be more likely to find an HRV instead of an ERV?

a. Florida b. Maine c. Mississippi d. Georgia

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