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Nookie1986 [14]
2 years ago
8

Using the table above, find the average atomic mass of the element. Then, using the periodic table, determine which element is s

hown.

Chemistry
2 answers:
lara [203]2 years ago
7 0

Answer:

Chlorine

Explanation:

  • The abundance of chlorine-35 is 75% and the abundance of chlorine-37 is 25%.
  • Chlorine for example has two naturally occurring isotopes: Chlorine-35 and chlorine-37.
  • Chlorine's atomic mass is 35.453 u.
topjm [15]2 years ago
5 0

Answer:

126.8, Iodine

Explanation:

mass ×abundance/100

(126.9045×80.45/100)+(126.0015×17.23/100)+(128.2230×2.23/100)

102.1+21.7+3=126.8

IODINE has an atomic mass of 126.8 or 126.9

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Oksi-84 [34.3K]
Molar mass :

Li₂S = <span>45.947 g/mol

AlCl</span>₃ = <span>133.34 g/mol

</span><span>3 Li</span>₂<span>S + 2 AlCl</span>₃<span> = 6 LiCl + Al</span>₂S₃

3 * 45.947 g Li₂S ----------> 2 * <span>133.34 g AlCl</span>₃
1.084 g Li₂S ----------------> ?

Mass Li₂S = 1.084 * 2 * 133.34 / 3 * 45.947

Mass Li₂S = 289.08112 / 137.841

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