Ammonium nitrate is a component of both fertilizers and explosives. Ammonium nitrate has nitrogen, hydrogen and oxygen atoms in the ratio 2:4:3. What is the correct formula for ammonium nitrate?
A) N4H8O6
B) N2H4O3
C) N1H2O1.5
D) all of these
B
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Which best describes a community-supported agriculture program?
A. Individuals pay a set amount to get a certain amount of produce from a local farmer once a week. B. Everybody in the community is required to spend a few hours cultivating a communal garden. C. People in the community grow their own food. D. Food is bought by the community from large industrial farms and distributed to the poor.
What is the "Asian Pivot" geopolitical strategy?
What will be an ideal response?
Which of the following is the smallest scale of atmospheric motion?
A. microscale B. mesoscale C. synoptic scale D. macroscale
Urban-rural temperature differences are lowest
A) around noon. B) in the evening. C) late at night. D) in summer.