Maury has an ice rink in his backyard. The scatter plot shows the thickness

The ratio pv to nrt is plotted against pressure for ch4 at 0°c and 200°c. why does the curve for 0°c drop below the horizontal line for an ideal gas whereas the curve for 200°c does not?

Does the problem involve permutations or? combinations? do not solve. the matching section of an exam has 4 questions and 7 possible answers. in how many different ways can a student answer the 4 ? questions, if none of the answer choices can be? repeated?

5,600 x 10^3 = a) 560 b) 5,000,600 c) 5,600,000 d) 56,000