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Lady bird [3.3K]
3 years ago
10

Help me please!! I need help with both finding the mistake and the answer and I'll give the brainliest :)

Chemistry
1 answer:
SCORPION-xisa [38]3 years ago
8 0

Answer:

293 grams Fe₂S₃(s)

Explanation:

16Fe(s)  +     3S₈(s)     =>     8Fe₂S₃(s)

Excess  |   1.25 mole    |         ? grams

moles Fe₂S₈ produced = 8/3(1.25) mole Fe₂S₃(s) Yield = 3.33 mole  Fe₂S₃(s)

∴ grams of  Fe₂S₈ = 3.33 mole x 88 g/mole = 293 grams Fe₂S₃(s)

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Acetic acid (CH3COOH) is formed from its elements by the following reaction equation:
Alecsey [184]

Answer:

111 L

Explanation:

Calculation of moles of hydrogen gas:-

Mass of H_2 = 18.6 g

Molar mass of H_2 = 2.01588 g/mol

Moles=\frac{Mass}{Molar\ mass}=\frac{18.6}{2.01588}\ mol=9.23\ mol

According to the given reaction:-

2C+2H_2+O_2\rightarrow CH_3COOH

2 moles of hydrogen gas on reaction produces one mole of acetic acid gas.

So,

1 mole of hydrogen gas on reaction produces \frac{1}{2} mole of acetic acid gas.

Also,

9.23 mole of hydrogen gas on reaction produces \frac{1}{2}\times 9.23 mole of acetic acid gas.

Moles of acetic acid gas = 4.615 moles

Given that:

Temperature = 35 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15  

So,  

T = (35 + 273.15) K = 308.15 K  

n = 4.615 moles

P = 1.05 atm

V = ?

Using ideal gas equation as:

PV=nRT

where,  

P is the pressure

V is the volume

n is the number of moles

T is the temperature  

R is Gas constant having value = 0.0821 L atm/ K mol  

Applying the equation as:

1.05 atm × V = 4.615 moles ×0.0821 L atm/ K mol  × 308.15 K  

<u>⇒V = 111 L</u>

3 0
4 years ago
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