In Science Lab, a student threw a paper airplane, which flew 338 meters through the air. While in the air, the paper airplane traveled at an average
speed of 13.0 m/s. How long was the paper airplane in the air?

Which factor is likely to impact the possible number of compounds? presence of unlimited number of elements in the periodic table the inability of atoms to align perfectly with other atoms the ability of all elements to react with every other element all elements being equally reactive

What are the trends and exceptions to the trends in electron affinity?

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?