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klio [65]
3 years ago
15

HELP ME PLZ HALPPP ùwú

Chemistry
2 answers:
Allushta [10]3 years ago
5 0
I don’t understand reply
sashaice [31]3 years ago
3 0
1. tail bone
2. pelvis
3. vertebrae
4. cranium
5. mandible
6. scapula
7. sternum
8. humerus
9. phalanges
10. ribs
11. patella
12. femur
i would say that reindeer live in colder climates. because they do.
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How wouldo I do research on which cup would keep a hot drink warmer
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Is the water found in the watershed clean and safe for drinking?
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"Carbonyl fluoride, COF2, is an important intermediate used in the production of fluorine-containing compounds. For instance, it
Alex17521 [72]

Answer:

\boxed{\text{0.50 mol/L}}

Explanation:

The balanced equation is

2COF₂ ⇌ CO₂+CF₄; Kc = 9.00

1. Set up an ICE table

\begin{array}{ccccc}\rm 2COF_{2} & \, \rightleftharpoons \, & \rm CO_{2} & +&\rm CF_{4}\\2.00& & 0& & 0\\-x& & +x & & +x\\2.00 - x& & x & &x \\\end{array}

2. Solve for x

K_{c} = \dfrac{[\rm CO][ \rm CF_{4}]}{[\rm COF_{2}]^{2}} = 9.00\\\\\begin{array}{rcl}\dfrac{x^{2}}{(2.00 - x)^{2}} & = & 9.00\\\dfrac{x}{2.00 - x} & = & 3.00\\x & = &3.00(2.00 - x)\\x & = & 6.00 - 3.00x\\4.00x & = & 6.00\\x & = & \mathbf{1.50}\\\end{array}

3. Calculate the equilibrium concentration of COF₂

c = (2.00 - x) mol·L⁻¹ = (2.00 - 1.50) mol·L⁻¹ = 0.50 mol

\text{The equilibrium concentration of COF$_{2}$ at equilibrium is $\boxed{\textbf{0.50 mol/L}}$}

Check:

\begin{array}{rcl}\dfrac{1.50^{2}}{0.50^{2}} & = & 9.00\\\\\dfrac{2.25}{0.25}& = & 9.00\\\\9.00 & = & 9.00\\\end{array}

OK.

5 0
4 years ago
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