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Bad White [126]
3 years ago
5

What is the order of the respiratory system?

Chemistry
1 answer:
eimsori [14]3 years ago
7 0
There are 3 major parts of therespiratory system: the airway, the lungs, and the muscles of respiration. The airway, which includes the nose, mouth, pharynx, larynx, trachea, bronchi, and bronchioles, carries air between the lungs and the body's exterior. The lungs
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Copper(I) ions in aqueous solution react with NH 3 ( aq ) according to Cu + ( aq ) + 2 NH 3 ( aq ) ⟶ Cu ( NH 3 ) + 2 ( aq ) K f
Kruka [31]

Answer:

53.18 gL⁻¹

Explanation:

Given that:

Cu^{2+}_{(aq)} + 2NH_{3(aq)} ------>  [Cu(NH_3)_2]^+_{(aq)}      ------equation (1)

where;

Formation Constant  (k_f) = 6.3*10^{10}

However, the Dissociation of CuBr_{(s) yields:

CuBr_{(s)}      ⇄    Cu^{+}_{(aq)}  + Br^-_{(aq)}      -------------- equation (2)

where;

the Solubility Constant (k_{sp})  = 6.3 *10^{-9

From equation (1);

(k_f) = \frac{[[Cu(NH_3)_2]^+]}{[Cu^{2+}][NH_3]^{2}}            ---------  equation (3)

From equation (2)

(k_{sp})  = [Cu^+][Br^-]           ---------  equation (4)

In NH_3, the net reaction for CuBr_{(s) can be illustrated as:

CuBr_{(s)   + 2NH_{3(aq)}  ⇄  [Cu(NH_3)_2]^+_{(aq)}  + Br^-_{(aq)}

The equilibrium constant (K) can be written as :

K=\frac{[[Cu(NH_3)_2]^+][Br^-]}{[NH_3]^2}

If we multiply both the numerator and the denominator with  [Cu^+] ; we have:

K=\frac{[[Cu(NH_3)_2]^+][Br^-]}{[NH_3]^2}*\frac{[Cu^+]}{[Cu^+]}

K=\frac{[[Cu(NH_3)_2]^+}{[NH_3]^2[Cu^+]}*{[Cu^+][Br^-]}

K = k_f *k_{sp}

K= (6.3*10^{10})*(6.3*10^{-9})

K= 3.97*10^2

K ≅ 4.0*10^2

Now; we can re-write our equilibrium constant again as:

K=\frac{[[Cu(NH_3)_2]^+][Br^-]}{[NH_3]^2}

4.0*10^2 = \frac{(x)(x)}{(0.76-2x)^2}

4.0*10^2 = \frac{(x)^2}{(0.76-2x)^2}

4.0*10^2 = (\frac{(x)}{(0.76-2x)})^2

By finding the square of both sides, we have

\sqrt {4.0*10^2} = \sqrt {(\frac{(x)}{(0.76-2x)})^2

2.0*10 = \frac{x}{(0.76-2x)}

20(0.76-2x) =x

15.2 -40x=x

15.2 = 40x +x

15.2 = 41x

x = \frac{15.2}{41}

x = 0.3707 M

In gL⁻¹; the solubility of CuBr_{(s) in 0.76 M NH_3 solution will be:

= \frac{0.3707 mole of CuBr}{1L}*\frac{143.45 g}{mole of CuBr}

=  53.18 gL⁻¹

4 0
3 years ago
The representative particle for nitrogen is:
koban [17]
The representative particle for nitrogen is a molecule.
6 0
3 years ago
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The main factor which effects the speed of a sound wave is the ____
Radda [10]

Answer:

it depends on the medium and the temperature

Explanation:

3 0
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A car starts from rest. It takes 6.0 seconds for the car to accelerate to 5 m/s2 W. What is the final velocity?
Artyom0805 [142]

Answer: 30 m/s

Explanation:

Use the first kinematic equation for linear motion

V=V_i+at\\V=0+(5)(6)\\v=30m/s

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3 years ago
Which element could provide one atom to make an ionic bond with fluorine
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Lithium i believe is the answer
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