At 80 °C, 2.00 mol HF was added to 20.0 mol water, resulting in a solution with a vapor pressure of 314.3 mmHg. The vapor pressure of pure water at 80 °C is 355.1 mmHg. What percentage of HF dissociated? 30

An apple is falling from a tree. disregarding air resistance, which diagram shows the free-body diagram of the force or forces acting on the apple?

In order for the bug to fly through the air a force has to push the bug forward. identify this force. how does the bug produce

If a rock is thrown upward on the planet mars with a velocity of 12 m/s, its height (in meters) after t seconds is given by h = 12t − 1.86t2. (a) find the velocity of the rock after two seconds. m/s (b) find the velocity of the rock when t = a. 12−3.72a m/s (c) when will the rock hit the surface? (round your answer to one decimal place.) t = s (d) with what velocity will the rock hit the surface? m/s