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3 years ago

Chemical ____ are used to represent compounds

Chemistry

2 answers:

BARSIC [14]3 years ago

5 0

It’s formula :) Thank me later

cupoosta [38]3 years ago

3 0

Answer:

Its formula :)

Explanation:

hope this helps <3

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At equilibrium, the concentrations of the products and reactants for the reaction, H2 (g) + I2 (g)  2 HI (g), are [H2] = 0.106

lana [24]

Answer:

The new equilibrium concentration of HI: [HI] = 3.589 M

Explanation:

Given: Initial concentrations at original equilibrium- [H₂] = 0.106 M; [I₂] = 0.022 M; [HI] = 1.29 M

Final concentrations at new equilibrium- [H₂] = 0.95 M; [I₂] = 0.019 M; [HI] = ? M

Given chemical reaction: H₂(g) + I₂(g) → 2 HI(g)

The equilibrium constant ( $K_{c}$ ) for the given chemical reaction, is given by the equation:

$K_{c} = \frac {[HI]^{2}}{[H_{2}]\: [I_{2}]}$

At the original equilibrium state:

$K_{c} = \frac {(1.29\: M)^{2}}{(0.106\: M) \times (0.022\: M)}$

$K_{c} = \frac {1.6641}{0.002332} = 713.59$

Therefore, at the new equilibrium state:

$K_{c} = \frac {[HI]^{2}}{(0.95\: M) \times (0.019\: M)}$

$\Rightarrow K_{c} = 713.59 = \frac {[HI]^{2}}{0.01805}$

$\Rightarrow [HI]^{2} = 713.59 \times 0.01805 = 12.88$

$\Rightarrow [HI] = \sqrt {12.88} = 3.589 M$

Therefore, the new equilibrium concentration of HI: [HI] = 3.589 M

6 0

2 years ago

Calculate the percent composition of muscovite mica. Its chemical

Vikki [24]

Answer:

Explanation:

(KF)2(Al2O3)3(SiO2)6(H2O)

molecular formula

K₂F₂Al₆Si₆O₂₂H₂

2 x 39 + 2 x 19 + 6 x 27 + 6 x 28 + 22 x 16 + 2 x 2

= 78 + 38 + 162+ 168+ 352+ 4

= 802

Percentage of K = 78 x 100 / 802

= 9.72 %

Percentage of F = 38 x 100 / 802

= 4.74 %

Percentage of Al = 162 x 100 / 802

= 20.2 %

Percentage of Si = 168 x 100 / 802

= 20.9 %

Percentage of O = 352 x 100 / 802

= 43.9 %

Percentage of H = 4 x 100 / 802

= .54 %

7 0

3 years ago

Sodium, Na, is a metallic element.

Vladimir79 [104]

Answer:

metallic bonding is the bond form between two or more metal elements or between metal element and the other group elements

5 0

1 year ago

Plz answer fasttt

wlad13 [49]

Answer:

I believe the answer would be C4H9O2.

5 0

2 years ago

A student standardizes a solution of aqueous NaOH against a measured mass of solid potassium hydrogen phthalate. She then uses t

wlad13 [49]

Answer:

(D) Neither I nor II

Explanation:

The reagent potassium hydrogen phthalate is found in pure form and it is not partially hydrated .

The pallet form of NaOH ( solid form ) absorbs carbon dioxide gas from the atmosphere but NaOH in solution form does not absorb carbon dioxide .

Hence option D ) is right choice .

8 0

3 years ago

Chemical ____ are used to represent compounds ​

Chemical ____ are used to represent compounds