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WARRIOR [948]
3 years ago
7

Consider the following reversible reaction.

Chemistry
2 answers:
Lelechka [254]3 years ago
8 0

Answer:

K = [CO2] / [O2]

Explanation:

The formula is K = [product] / [reactant].

C is excluded because it is a solid. And the rule says when there's a solid with other gases, only the gases will be considered for the equilibrium constant expression

zvonat [6]3 years ago
6 0

<u>Answer:</u> The expression of equilibrium constant for the given equation is K_{eq}=\frac{[CO_2]}{[O_2]}

<u>Explanation:</u>

Equilibrium constant in terms of concentration is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as K_{eq}

For a general chemical reaction:

aA+bB\rightleftharpoons cC+dD

The expression for K_{eq} is written as:

K_{eq}=\frac{[C]^c[D]^d}{[A]^a[B]^b}

The concentration of pure solids and pure liquids are taken as 1 in the expression.

For the given chemical reaction:

C(s)+O_2(g)\rightleftharpoons CO_2(g0

The expression of K_{eq} for above equation follows:

K_{eq}=\frac{[CO_2]}{[O_2]}

Hence, the expression of equilibrium constant is written above.

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What mass of hydrogen is produced from 5.71 mol of aluminum?
nasty-shy [4]

Answer:

3.03 g

Explanation:

The first thing to do here is figure out the chemical formula for aluminium hydroxide.

Aluminium is located in group

13

of the periodic table, and forms

3

+

cations,

Al

3

+

. The hydroxide anion,

OH

−

, carries a

1

−

charge, which means that a formula unit of aluminium hydroxide will look like this

[

Al

3

+

]

+

3

[

OH

−

]

→

Al

(

OH

)

3

Now, you can figure out the mass of hydrogen present in

1

mole of aluminium hydroxide by first determining how many moles if hydrogen you get in

1

mole of aluminium hydroxide.

Since

1

mole of aluminium hydroxide contains

3

moles of hydroxide anions, which in turn contain

1

mole of hydrogen each, you can say that you will have

1 mole Al

(

OH

)

3

→

3

a

moles OH

−

→

3

a

moles H

The problem tells you that the molar mass of hydrogen is equal to

1.01 g mol

−

1

. This means that

1

mole of hydrogen has a mass of

1.01 g

.

You can thus say that one mole of aluminium hydroxide contains

3

moles H

⋅

1.01 g

1

mole H

=

a

a

3.03 g H

a

a

∣

∣

I'll leave the answer rounded to three sig figs. Btw my sister calculated this oof

5 0
3 years ago
The molar mass of barium nitrate (ba(no3)2) is 261.35 g/mol. what is the mass of 5.30 × 1022 formula units of ba(no3)2? 0.0900 g
liberstina [14]

Molar mass is the ratio of the mass to that amount of the substance. The mass of the barium nitrate in the formula unit is 23.0 grams.

<h3>What is mass?</h3>

The mass of a substance is the product of the molar mass of the compound and the number of moles of the compound.

Given,

Molar mass of barium nitrate = 261.35 g/mol

If, 6.022 \times 10^{23} have a mass of 261.35 g/mol then, 5.30 \times 10^{22} formula units will have a mass of,

\begin{aligned}& = \dfrac{261.35 \times 5.30 \times 10^{22}}{6.022\times 10^{23}}\\\\&= 23.0\;\rm gm\end{aligned}

Therefore, option C. 23.0 gm is the mass of barium nitrate.

Learn more about mass here:

brainly.com/question/24958554

6 0
2 years ago
Aqueous sulfuric acid reacts with solid sodium hydroxide to produce aqueous sodium sulfate and liquid water . What is the theore
Masja [62]

Answer:

71g (assuming experimental data)

Explanation:

The balanced equation for this reaction:

H_{2} SO_{4}(aq) + 2NaOH (s) → Na_{2}SO_{4} (l) + 2H_{2} O (l)

Molar mass of H2SO4 = 98.1 g/mol

molar mass of NaOH = 40g/mol

Molar mass of Na2SO4 = 142.04g/mol

⇒ 1 mole or 98.1g of H2SO4 will yield 1 ole of NaSO4; alternately, 2 moles or 49 ×2 = 80g of NaOH produces 1 mole of NaSO4.

<em>Therefore, limiting reactant is NaOH.</em>

Assuming actual experiment is 20g of NaOH,

1 mole - 40g

x moles - 20g = \frac{20}{40} = 0.5 moles

⇒1 mole of Na2SO4 - 142.04g

∴ 0.5 moles = 142.04 × 0.5

<u>= 71.02g</u>

7 0
3 years ago
Story that ends in i have never found such a kind person ever since ​
zmey [24]

Answer:

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Explanation: I think this is what you are looking for. Hope this helps.

7 0
3 years ago
One molecule of glucose makes 36 molecules of atp how many molecules of glucose are needed to make 1800 molecules of atp
pogonyaev
You would need exactly 50 molecules of glucose. 
3 0
4 years ago
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