From the negative side of the molecule.:)
Answer:
20.19 amu.
Explanation:
From the question given above, the following data were obtained:
Isotope A:
Abundance (A%) = 90.5%
Mass of A = 20 amu
Isotope B:
Abundance (B%) = 9.5%
Mass of B = 22 amu
Average atomic mass =..?
The average atomic mass of the element can be obtained as follow:
Average atomic mass = [(Mass of A × A%)/100] + [(Mass of B × B%)/100]
Average atomic mass = [(20 × 90.5)/100] + [(22 × 9.5)/100]
Average atomic mass = 18.1 + 2.09
Average atomic mass = 20.19 amu
Therefore, the average atomic mass of the element is 20.19 amu
Answer:
Okay here's the answer ↓
Step-by-step explanation:
Tropical climate is one of the five major climate groups in the Köppen climate classification. Tropical climates are characterized by monthly average temperatures of 18 ℃ (64.4 ℉) or higher year-round and feature hot temperatures. Annual precipitation is often abundant in tropical climates, and shows a seasonal rhythm to varying degrees. There are normally only two seasons in tropical climates, a wet season and a dry season. The annual temperature range in tropical climates is normally very small. Sunlight is intense because they are receiving direct sunlight.