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loris [4]
3 years ago
12

Please please help

Chemistry
1 answer:
il63 [147K]3 years ago
4 0

Explanation:

question 44

the number 35 of bromine represents the atomic number

question 45

29 protons,

27 electrons

29-27 = +2

the charge on the following particle is

+2

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Suppose a 1.0 L solution contains 0.020 M in Cu(NO3)2, then 0.40 moles of NH3 are added. Assuming no change in volume, what is t
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Answer:

4.6*10^{-14} M

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Change (M)         -  x                - 4 x                       x

Equilibrium (M)  0.020 -x        0.40 - 4 x              x

Given that: K_f =1.7*10^{13}

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x = \frac{8.704*10^9}{4.352*10^{11}}

x = 0.0199999999999540

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