Assuming nitrogen is an ideal gas, we use the relation PV=nRT tp predict what will happen to the system. From the equation, nR/P is constant. So, if the sample is cooled to 72K then volume would decrease. This decrease in volume would affect the density of the substance. It would increase its density. Therefore, the answer would be density.
In modern democracies, citizens had contrasting senses
I was just learning to drive a bicycle; I was in 4th grade then. I just borrowed the bike from my classmate; and so, I had limited time. When I found out that I could already balance myself, I pedaled with excitement ignoring the downhill slope. I pressed the brake but it did not stop. I was already in panic and I did not know what to do. So, I jumped off the bike and fell on some rocky dirt. Amazingly, the bike was not damaged. I had buises on my arms and legs but I did not cry. Nobody saw me and I felt so proud of myself. Since then, I became more confident; the way I look at life has changed. Through this experience, I have learned that I can take care of myself and I should be more careful. I have to be accountable for everything I do.
