Answer: all I know it’s not -31.5 for ppl taking the k12 test
Explanation: I took the test
It should be B. All of the other choices are used often by abusers
Answer:

Explanation:
We have the equation for ideal gas expressed as:
PV=nRT
Being:
P = Pressure
V = Volume
n = molar number
R = Universal gas constant
T = Temperature
From the statement of the problem I infer that we are looking to change the volume and the pressure, maintaining the temperature, so I can calculate the right side of the equation with the data of the initial condition of the gas:



So

Now, as for the final condition:


clearing



15mL because if it started as 20 mL and went to 35mL when u put in pyrite, the pyrite takes up 15mL