A student has stored of helium gas over water on a cool day when the temperature in the room reads 20.5°C. If the barometric pressure in the room is 768 mm Hg, what is the pressure of the helium
gas in its container?

Often on a topographic map, every fifth contour line is darkened. what is this line called? a. key b.slope c.benchmark d. index contour

Identify the electromagnets with poles that are reversed from the electromagnet shown above

Need ! asap will mark 10 pts using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers