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Inessa05 [86]
3 years ago
15

Consider the balanced equation.

Chemistry
2 answers:
Liula [17]3 years ago
7 0

Answer:

The answer is 53.4%

Explanation:

I just took the quiz.

Zolol [24]3 years ago
6 0

 <span>The balanced reaction that describes the reaction between hydrogen and nitrogen to produce ammonia is expressed 3H2 + N2 = 2NH3. The yield of the reaction is equal to the actual amount of product divided to the theoretical amount of product multiplied by 100 percent. 26.3 grams of H2 theoretically produces149 grams. The yield is 79 divided by 149 equal to 53.02 percent. </span>

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How many grams of O2 are present in 44.1 L of O2 at STP?
ycow [4]

Taking into accoun the STP conditions and the ideal gas law, the correct answer is option e. 63 grams of O₂ are present in 44.1 L of O2 at STP.

First of all, the STP conditions refer to the standard temperature and pressure, where the values ​​used are: pressure at 1 atmosphere and temperature at 0°C. These values ​​are reference values ​​for gases.

On the other side, the pressure, P, the temperature, T, and the volume, V, of an ideal gas, are related by a simple formula called the ideal gas law:  

P×V = n×R×T

where:

  • P is the gas pressure.
  • V is the volume that occupies.
  • T is its temperature.
  • R is the ideal gas constant. The universal constant of ideal gases R has the same value for all gaseous substances.
  • n is the number of moles of the gas.

Then, in this case:

  • P= 1 atm
  • V= 44.1 L
  • n= ?
  • R= 0.082 \frac{atmL}{molK}
  • T= 0°C =273 K

Replacing in the expression for the ideal gas law:

1 atm× 44.1 L= n× 0.082 \frac{atmL}{molK}× 273 K

Solving:

n=\frac{1 atm x44.1 L}{0.082\frac{atmL}{molK}x273K}

n=1.97 moles

Being the molar mass of O₂, that is, the mass of one mole of the compound, 32 g/mole, the amount of mass that 1.97 moles contains can be calculated as:

1.97 molesx\frac{32 g}{1 mole}= 63.04 g ≈ <u><em>63 g</em></u>

Finally, the correct answer is option e. 63 grams of O₂ are present in 44.1 L of O2 at STP.

Learn more about the ideal gas law:

  • <u>brainly.com/question/4147359?referrer=searchResults</u>
7 0
3 years ago
Physical and chemical properties of Salicylic Acid?
LUCKY_DIMON [66]

Answer:

Salicylic acids are clear white needle shaped crystal in room temperature and are used in pharmaceutical industries to produce analgesic.

Explanation:

  • Salicylic acids are aromatic organic compound also known as monohydroxybenzoic acid which is lipophilic in nature.
  • the physical properties are :
  1. they are colorlesss and odourless at room temperature.
  2. boiling point is 211°C and melting point is 315°C
  3. they are poorly soluble in water
  4. its saturated solution has pH of 2.4
  • the chemical properties are:
  1. acytylation of hydroxy group in salicylic acid gives acytylsalicylic acid which is used as aspirin.
3 0
3 years ago
What is the concentration of kl solution if 20.68g of solute was added to enough water to form 100ml solution?
rewona [7]

Answer:

1.25 M

Explanation:

Step 1: Given data

Mass of KI (solute): 20.68 g

Volume of the solution: 100 mL (0.100 L)

Step 2: Calculate the moles of solute

The molar mass of KI is 166.00 g/mol.

20.68 g × 1 mol/166.00 g = 0.1246 mol

Step 3: Calculate the molar concentration of KI

Molarity is equal to the moles of solute divided by the liters of solution.

M = 0.1246 mol/0.100 L= 1.25 M

5 0
3 years ago
Match the Terms to their definition:
olganol [36]
1. B
2. H
3. G
4. I
5. D
6. C
7. A
8. F
9. E
I am not sure weather it is correct but I wrote what I know
3 0
3 years ago
Read 2 more answers
PLEASE HURRY!!!!!!!!!!<br><br> This is the only one I don’t know
VMariaS [17]
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4 0
3 years ago
Read 2 more answers
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