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pettitchristy1
13.10.2020 •
Chemistry
I was riding my bike the other day under some very big power lines on a trail and when ever i touched the brake handles it would shock me and when I was farther away from the power lines it wouldn't hurt as much.
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Ответ:
owee ik tht had to hurt are uu okay now :(
Explanation:
Ответ:
1.99 x 10²³ formula units
Explanation:
Given parameters:
Mass of AgF = 42.15g
Unknown:
The amount of formula units
Solution:
To solve this problem, we set out by find the number of moles in this compound from the given mass.
Number of moles =![\frac{mass}{molar mass}](/tpl/images/0575/0969/5ded5.png)
molar mass of AgF = 107.9 + 19 = 126.9g/mol
Number of moles =
= 0.33 moles
1 mole of a substance = 6.02 x 10²³ formula units
0.33 moles of AgF = 0.33 x 6.02 x 10²³ = 1.99 x 10²³ formula units