Answer:
9 grams of methane contains a greater number of hydrogen atoms (therefore molecules) than 10 grams of ammonia
Explanation:
The number of atoms of hydrogen per molecule of ammonia = 3 atoms of hydrogen
The number of atoms of hydrogen per molecule of methane = 4 atoms of hydrogen
The molar mass of methane = 16.04 g/mol
The molar mass of ammonia = 17.031 g/mol
The number of moles of methane in 9 grams of methane = 9/16.04 ≈ 0.561 moles
The number of hydrogen atoms in 0.561 moles of methane = 0.561 × 6.02 × 10²³ × 3 ≈ 1.351 × 10²⁴ atoms of hydrogen
The number of moles of ammonia in 10 grams of ammonia = 10/17.031 ≈ 0.5872 moles
The number of hydrogen atoms in 0.5782 moles of ammonia = 0.5872 × 6.02 × 10²³ × 3 ≈ 1.06 × 10²⁴ atoms of hydrogen
Therefore, 9 grams of methane contains a greater number of hydrogen atoms than 10 grams of ammonia.
Answer:
B
Drought, because the ecosystem is very dry
Explanation:
The desert lacks rainfall and plaint growth. The desert is located in the southwest united states.
Build open-air houses is the following activities is not something people in South and Southeast Asia do to cope with a tropical climate.
<u>Explanation:</u>
South and Southeast Asia with a tropical climate are associated with heavy rainfall. As winter closes, warm, soggy air from the southwest Indian Ocean heads towards South Asia; the mid-year rainstorm brings mugginess and heavy precipitation. The South Asia rainstorm season is imperative for horticulture and occupations in the district.
Storm downpours happen over tropical and subtropical locales, most ordinarily in territories close to the Indian Ocean. Storms cause areas to encounter exceptional wet and dry seasons, adequately driving these locale's atmosphere. So individuals in South and Southeast Asia never manufactured Build outside houses to adapt to a tropical atmosphere.
The correct answer is A positive correlation
Explanation: A positive correlation indicates that the two variables move together, and the relationship is strong the closer the correlation gets to one. A negative correlation indicates that the two variables move in opposite directions, and that the relationship also becomes stronger the closer to minus 1 the correlation becomes.
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