A student collected the following data for a fixed volume of gas:

Question

A student collected the following data for a fixed volume of gas:

Temperature(C) pressure(mm of hg)
10 726
20 750
40 800
70 880
100 960
150 ???

pressure is directly proportional to temp in Kelvins. So change temps to K

emperature(K) pressure(mm of hg)
283 726
293 750
313 800
263 880
393 960
423 ???

Now do a proportion
PPP/423=960/393

is it 1025 ?

Answer 1

I have no idea what the question is.

Answer 2

To determine the missing pressure value for a temperature of 150°C, we first need to convert the temperatures from Celsius to Kelvin. This can be done by adding 273 to each Celsius temperature.

Converting the temperatures, we have:
Temperature (K): 283, 293, 313, 333, 373, 423
Pressure (mm of Hg): 726, 750, 800, 880, 960, ???

To check if pressure is directly proportional to temperature in Kelvin, we can use a proportion:

(Pressure 1 / Pressure 2) = (Temperature 1 / Temperature 2)

Let's use the given data points (293 K, 750 mmHg) and (423 K, ??? mmHg) to set up the proportion:

(750 / ???) = (293 / 423)

To solve for ???, we can cross-multiply and solve for the missing pressure value:

(750 * 423) = (293 * ???)

Now, isolate the missing pressure value by dividing both sides by 293:

(750 * 423) / (293) = ???

Calculating this expression, we can find the missing pressure value:

(750 * 423) / (293) = 1086.29

So, the missing pressure value for a temperature of 150°C (423 K) would be approximately 1086.29 mmHg.