At 80 °C, 2.00 mol HF was added to 20.0 mol water, resulting in a solution with a vapor pressure of 314.3 mmHg. The vapor pressure of pure water at 80 °C is 355.1 mmHg. What percentage of HF dissociated? 30

Aproton is projected toward a fixed nucleus of charge +ze with velocity vo. initially the two particles are very far apart. when the proton is a distance r from the nucleus its velocity has decreased to 1/2vo. how far from the nucleus will the proton be when its velocity has dropped to 1/4vo?

What is the name for the remnant of an asymptotic giant that has lost its shells? black dwarf white dwarf yellow giant black hole

Lightning is an example of what phenomenon? a release of a large amount of energyan absorption of a large amount of energya natural electric circuita natural electric current