Can someone help me to answer these Chemistry questions?

Chemistry

1 answer:

Andreyy894 years ago

3 0

Which ones in specific

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You may want to reference (pages 209 - 211) section 5.4 while completing this problem. part a a weather balloon is inflated to a

IceJOKER [234]

For this question we can used the combined gas law equation
for a fixed amount of gas PV/T = constant
$\frac{P1V1}{T1} = \frac{P2V2}{T2}$
where P - pressure, V-volume and T - temperature
parameters for the first instance are given on the left side and parameters for the second instance are given on the right side of the equation.
Temperature should be in Kelvin
temperature in K = temperature in celcius + 273
T1 = 25.9 °C + 273 = 298.9 K
T2 = -13.6 °C + 273 =259.4 K
substituting the values into the equation , V - volume at the altitude can be found out
$\frac{730mmHg*26.9L}{298.9K} = \frac{370mmHg*V}{259.4 K}$
V = 46.1 L

6 0

3 years ago

Using the relation dS = (δQ/T)int rev for the definition of entropy, calculate the change in the specific entropy of R-134a as i

pashok25 [27]

Answer:

The value of specific entropy = 0.847 $\frac{KJ}{kg K}$