Answer:
The atomic mass of silver is 107.86 amu
Explanation:
The atomic mass is calculated by formula
Atomic mass = (Mass of first isotope x Abundance of first isotope) + (Mass of Second isotope x Abundance of second isotope)
In case of silver, the formula will be as
Atomic mass = (Mass of Ag-107 x Abundance Ag-107) + (Mass of Ag-109 x Abundance Ag-109)
Mass of Ag- 107 = 106.9
Mass of Ag- 109 = 108.9
Abundance of Ag-107 = 51.82/100 = 0.5182
Abundance of Ag-109 = 48.18/100 = 0.4818
Putting these values in the formula
Atomic mass of silver = (106.9 x 0.5812) + (108.9 x 0.4818) = 107.86 amu
Answer:
B
Explanation:
An important distinction exists between exocrine and endocrine glands. Whereas exocrine glands secrete substances into a ductal system to an epithelial surface, endocrine glands secrete products directly into the bloodstream.
<span>People with injuries to the prefrontal cortex of the brain often suffer from a decreased sense of empathy and trouble handling other social emotions. This is due to the prefrontal cortex being the area of the brain that deals with planning cognitive behavior and decision making. This section of the brain is a key part of moderating ones social behavior as well.</span>
Answer:a primitive characteristic retained in only some primates
The xylem transports water to the plant, so if the fungus blocks the xylem, the plant would eventually dehydrate, affecting the role of the xylem.
The phloem transports glucose, nutrients and such, therefore the fungi may try to steal the nutrients for the plant, affecting its role.