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Hunter-Best [27]
3 years ago
11

Which step you should take before performing a scientific investigation

Chemistry
1 answer:
Julli [10]3 years ago
4 0

Answer:

D. Purchase the equipment and chemicals you will need​

Explanation:

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The equilibrium constant, Kc, for the reaction N2O4(g)⇌2NO2(g) is 5.0×10−3. If the equilibrium mixture contains [NO2] = 0.050 M
Sergeu [11.5K]

Answer:

0.50 M is the molar concentration of N_2O_4.

Explanation:

The equilibrium constant of the reaction = K_c=5.0\times 10^{-3}

N_2O_4(g)\rightleftharpoons 2NO_2(g)

Equilibrium concentration of NO_2 = 0.050 M

[NO_2]=0.050 M

Equilibrium concentration of N_2O_4 = ?

[N_2O_4]= x

The equilibrium constant of the reaction is given aSL:

K_c=\frac{[NO_2]^2}{[N_2O_4]}

K_c=\frac{(0.050 M)^2}{x}=5.0\times 10^{-3}

x = 0.50 M

0.50 M is the molar concentration of N_2O_4.

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4 years ago
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Lina20 [59]

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Explanation:

5 0
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In which of the following substances does a beam of light travel the fastest?
MAVERICK [17]

Answer:

d

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If you lower the energy stored in a chemical bond this is an example of?
Tems11 [23]

Answer:

as individual atoms

Explanation:

toms bond together to form compounds because in doing so they attain lower energies than they possess as individual atoms. A quantity of energy, equal to the difference between the energies of the bonded atoms and the energies of the separated atoms, is released, usually as heat.

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