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jasenka [17]
4 years ago
12

How do you solve this? I am so confused. This is Chemistry 1 HON and its dimensional analysis. It would help me so much if someo

ne explained it and showed work please and thank you...

Chemistry
1 answer:
Mekhanik [1.2K]4 years ago
4 0

1. 150 yards

2. 4320

3. 144

4. 2688

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Air in a closed cylinder is heated from 25 degree C to 36 degree C. If the initial pressure is 3.80 atm what is the final pressu
Pavlova-9 [17]

Answer: 3.94 atm

Explanation:

Given that,

Initial pressure (P1) = 3.80atm

Initial temperature (T1) = 25°C

since the standard unit of temperature is Kelvin, convert 25°C to Kelvin

(25°C + 273= 298K)

Final pressure P2 = ?

Final temperature T2 = 36°C

(36°C + 273= 309K)

Since pressure and temperature are given while volume is held constant, apply the formula for Pressure's law

P1/T1 = P2/T2

3.80 atm / 298K = P2 / 309K

To get the value of P2, cross multiply

3.80 atm x 309K = P2 x 298K

1174.2 atm•K = 298K•P2

Divide both sides by 298K

1174.2 atm•K/298K = 298K•P2/298K

3.94 atm = P2

Thus, the final pressure is 3.94 atm

5 0
3 years ago
Read 2 more answers
Which kelvin temperature is equal to -73 c?
zmey [24]
The conversation rate is c+273=k
8 0
4 years ago
QUESTION 21 The combustion of ammonia in the presence of excess oxygen yields NO 2 and H 2O: 4 NH 3 (g) 7 O 2 (g) 4 NO 2 (g) 6 H
Harrizon [31]

Answer:

The answer to your question is 47.44 g of Oxygen

Explanation:

Data

mass of Ammonia = 14.4 g

mass of Oxygen = ?

Balanced chemical reaction

                 4NH₃  +  7O₂  ⇒  4NO₂  +  6H₂O

Process

1.- Calculate the molar mass of Ammonia

NH₃ = 4[(1 x 14) + (3 x 1)] = 4[14 + 3] = 4[17] = 68 g

2.- Calculate the molar mass of Oxygen

O₂ = 7[16 x 2] = 7[32] = 224 g

3.- Use proportions to calculate the mass of Oxygen

                     68g of NH₃ --------------------- 224 g of O₂

                      14.4 g of NH₃ -----------------  x

                       x = (14.4 x 224) / 68

                       x = 3225.6/ 68

                       x = 47.44 g

5 0
3 years ago
Which is the BEST evidence that a chemical change has occurred?
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d///////////////////////////////

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4 years ago
23. The cell has a
andrew11 [14]
Then that would be 100% all together I believe
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