An object is falling straight down. The minimum number of axes required in a frame of reference used to analyze its motion is A. 3 B. 2 C. 1 D. 0

What’s #16 asking and how do i solve it?

The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.

Which of the the following are examples of projectile motion of both projectile motion and two dimensional motion