B, mode since mode represents the data is the most frequent in the whole set, which in this case is 8cm
I’m working on this rn lol
Answer:
The average atomic mass is 126.1
Explanation:
To obtain the atomic mass of the isotope we use this formula;
(% composition of isotope 1 * mass number) + (% composition of isotope 2 * mass number)
1. Equate the percentage composition with the mass number of each isotope
45/100 * 125 = 56.25
55/100 * 127 = 69.85
2. Add both answers together you get,
56.25 + 69.85 = 126.1.
The average atomic mass is therefore 126.1
The best and most correct answer among the choices provided by your question is the second choice or letter B.
<span>One way to test whether the reaction is dehydration synthesis or hydrolysis reaction is to determine whether water is formed.</span>
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You’re being asked to write the noble gas notation for the elements. Basically what you do is write the noble gas before the element in brackets and then continue the electron configuration from there (it’s kind of like a short cut). Heres an example: the noble gas notation for Cs (cesium) is: [Xe] 6s2. Also for the expected last terms of the element, you basically just write the last term of the electron configuration. For example, the last term of the electron configuration for Cl (Chlorine) is “3p5” I’ll attach a picture of the periodic table but with the electron configuration format over it to help you.
