How many ketones have the molecular formula C5H10O?

A) 1
B) 2
C) 3
D) 4


C

Environmental & Atmospheric Sciences

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Thick salt deposits have been explained by evaporation in silled (also called “barrier”) basins

a. True b. False

Environmental & Atmospheric Sciences

The pH scale is a quantitative representation of the relative amounts of ________

A) water and carbon dioxide molecules in solution B) hydrogen and polar water molecules in solution C) alkaline and basic ions in solution D) hydrogen and oxygen ions in solution E) hydrogen and hydroxyl ions in solution

Environmental & Atmospheric Sciences

Which farming practice(s) reduce(s) soil erosion?

A. planting cover crops B. contour farming and terracing C. planting wind breaks D. planting wind breaks, contour farming and terracing, and planting cover crops

Environmental & Atmospheric Sciences

Biodiversity experts estimate that during this century, the extinction rate due to human activities will rise to ____ times the background extinction rate.

A. 3 B. 10 C. 20 D. 100 E. 10,000

Environmental & Atmospheric Sciences