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amid [387]
3 years ago
9

A sample of gas has a volume of 3.50 L and a temperature of 298 K. What would be the volume of the same gas sample if the temper

ature is decreased to 285 K at a constant pressure?
Chemistry
1 answer:
Stella [2.4K]3 years ago
3 0
Initial Conditions:
Volume=v1= 3.5 L
Temperature= T1 =298K
 
Final Conditions:
Temperature= T2= 285K
Volume= v2= ?

Use the general gas equation;
                                        P1*v1/T1 = P2*v2/T2

Note:
Pressure is constant
so the equation become,
                                           v1/T1 = v2/T2
                                          3.5/298 = v2/285
                                              v2 = 3.347 L
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AnnyKZ [126]

Answer:

Explanation:

Potential energy builds as the coaster is going up the loop-the-loop and converts to kinetic energy on the way down and out of the loop-the-loop. The potential energy of the coaster is at its lowest and the kinetic energy is at its highest as the coaster moves in the lowest point of the loop-the- loop.

7 0
3 years ago
The diagram and data below represent gas and the conditions of pressure, volume, and temperature of the gas in a rigid cylinder
Sedaia [141]

Answer:

2.3 L

Explanation:

when you have this eqaution you use P1V1T2=P2V2T1.

since you are looking for volume of gas cylinder that means you are looking for V2.

so you have your given P= 1.0 atm, V=2.5L, T=298K.

They ask you to use STP or standard pressure and temperature.

STP P= 1atm, STP T=273 K

so you are looking for V2 meaning you are going to get V alone so your new equation is P1*V1*TS/ P2* T1= V2

so you now substitue so its now 1*273*2.5/ 1* 298= V

682.5/ 298= V

Lastly V= 2.2902 and you round to tenths so now you have

V= 2.3 L

5 0
3 years ago
Assume that the NO, concentration in a house with a gas stove is 150 pg/m°. Calculate the equivalent concentration in ppm at STP
jok3333 [9.3K]

Explanation:

It is known that for NO_{2}, ppm present in 1 mg/m^{3} are as follows.

                      1 \frac{mg}{m^{3}} = 0.494 ppm

So, 150 pg/m^{3} = \frac{150}{1000} mg/m^{3}

                       = 0.15 mg/m^{3}

Therefore, calculate the equivalent concentration in ppm as follows.

             0.15 \times 0.494 ppm

              = 0.074 ppm

Thus, we can conclude that the equivalent concentration in ppm at STP is 0.074 ppm.  

4 0
3 years ago
Which kelvin temperature is equal to 56°C?<br> (1) –329 K (3) 217 K<br> (2) –217 K (4) 329 K
natali 33 [55]
The answer is 329. Because 273 + 56 = 329. 
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3 years ago
1. Most fruit juices are a solution of water, sugar, and fruit-specific chemicals. In this solution, identify the solvent and so
lianna [129]
In this case, we can say that water is the solvent. Solvent by definition are the part of the solution that is present in the largest amount. The fruit juice are all dilute by the water. Everything else in the fruit juice can be called the solute, they are what is "dissolved" in the solvent (sugar, fruit juice, etc.).   

Hoped I helped!
5 0
4 years ago
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