does someone wanna do a zoom with me so they can help me with my math homework, my teach gave the whole class like 2 assignments bc most of the class got F's on their tests. Plz help!

What is the value of the expression below? (81^2)^1/8

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?

Pam buys a sleeve of ball bearings for her skateboard. each of the bearings is 1 1/5 inches wide. the sleeve is 9 3/5 inches long. how many ball bearings are in the sleeve? show your work.