Answer:
![aam=\frac{\Sigma m_{i} \times ab_{i} }{100}](https://tex.z-dn.net/?f=aam%3D%5Cfrac%7B%5CSigma%20m_%7Bi%7D%20%5Ctimes%20ab_%7Bi%7D%20%7D%7B100%7D)
Explanation:
When an atom has 2 or more isotopes, the average atomic mass (aam) depends on the mass of each isotope (mi) and the percentual abundance in nature of each isotope (abi). The average atomic mass can be calculated using the following expression:
![aam=\frac{\Sigma m_{i} \times ab_{i} }{100}](https://tex.z-dn.net/?f=aam%3D%5Cfrac%7B%5CSigma%20m_%7Bi%7D%20%5Ctimes%20ab_%7Bi%7D%20%7D%7B100%7D)
Answer:
Ice floats on water because it is less dense than water. When water freezes into its solid form, its molecules are able to form more stable hydrogen bonds locking them into positions. Because the molecules are not moving, they're not able to form as many hydrogen bonds with other water molecules. Ice is a unique substance because it is solid-state — ice — is less dense than its liquid state. Because of this property, ice floats in water. Physical properties are characteristics of a substance. They do not change. Ice floats on water because it is less dense than water. When water freezes into its solid form, its molecules are able to form more stable hydrogen bonds locking them into positions.
Answer:
Its olive oil
Explanation:
0.92 g/mL x 20=18.4
Water and glycerin are too heavy, and math rules out ethanol