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Lady_Fox [76]
3 years ago
15

Given the following equation: 8 Fe + S 8  8 FeS

Chemistry
1 answer:
sleet_krkn [62]3 years ago
8 0

Answer:

Explanation:

so u can work out the amount of moles of S8 by using

moles=mass/mr

=16/32.1=0.498moles

then use the molar ratio of

S : Fe

1:1 so the moles of Fe is the same 0.498

The use the equation

mass = mr x moles

=55.8 x 0.498

=27.78

so 27.8 g

hope this make sense :)

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What is the mass in grams of 14.2 liters of sulfur dioxide gas at STP?
ICE Princess25 [194]

Answer:

Mass = 40.4 g

Explanation:

Given data:

Mass in gram = ?

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Temperature = standard = 273 K

Pressure =  standard = 1 atm

Solution:

The given problem will be solve by using general gas equation,

PV = nRT

P= Pressure

V = volume

n = number of moles

R = general gas constant = 0.0821 atm.L/ mol.K  

T = temperature in kelvin

1 atm × 14.2 L = n × 0.0821 atm.L/ mol.K   × 273 K

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n = 14.2 atm.L/22.41 atm.L/ mol

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Mass of sulfur dioxide:

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7 0
3 years ago
What is the pH of a 5.09 x 10-5 M solution of NaOH?
Varvara68 [4.7K]

<u>Answer:</u> The pH of the solution is 9.71

<u>Explanation:</u>

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We are given:

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To calculate the pH of the solution, we need to determine pOH of the solution. To calculate pOh of the solution, we use the equation:

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We are given:

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Putting values in above equation, we get:

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To calculate pH of the solution, we use the equation:

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bixtya [17]

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500×10-3what about 2?

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