<u>Answer:</u>
The correct answer option is 1.6 atm.
<u>Explanation:</u>
We know that there is a sample gas which has a volume of 2.4 L with a pressure 1.2 atm and we are to find the pressure of the same gas sample if its volume is reduced to 1.8 L at a constant temperature.
We will apply the Boyle's law here which states that the "pressure of a given mass of an ideal gas is inversely proportional to its volume at a constant temperature".
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Substituting the values in the formula to get:

Therefore, the pressure of the same gas sample will be 1.6 atm if the volume is reduced to 1.8 L at a constant temperature.
It is the chemiclas that is needed in the chimstry in science class
For the second one it is physical
I’m not a 100% shure but I would personally say OIL SPILLS.
A. 3
From 0 to 6, a solution is acidic. 7 is neutral and from 8 to 14.. is basic