lea has just ordered a box of "universal" litmus paper. she dips one piece into vial a, and it turns green. she dips another piece into vial b, and it turns red.
which vial, a or b, contains a greater concentration of h+ ions?

The freezing and boiling point of a substance changes as the air pressure around it changes. for example, at a lower air pressure (higher altitude) it is easier for water molecules to escape from liquid into the air. in a high altitude city such as denver, colorado compared to a sea-level city such as houston, texas, water

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

How many neutrons does plutonium -196 with an atomic number of 78.