What charge does an atom have when electrons are lost from the atom?

Drag each item into the proper state of matter category.

Which is the correct symbol for an isotope of iodine with 53 protons and 78 neutrons?

Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.