When a rock undergoes erosion, the rock must first be

Express the following number in scientific notation. 0.026890 =

Ajet plane is speeding down the runway during takeoff. air resistance is not negligible. identify the forces on the jet.

When a chemist collects hydrogen gas over water, she ends up with a mixture of hydrogen and water vapor in her collecting bottle. if the pressure in the collecting bottle is 97.1 kilopascals and the vapor pressure of the water is 3.2 kilopascals, what is the partial pressure of the hydrogen?