How many protons are in an ion with 54 electron and -1 charge?

Which of the following true? a_volcanoes and earthquakes often near the plate boundaries. b_volcanoes occur whereve there are tall mountains. c_earthquakes cause volcanoes in the same location to erupt violently d_volcanoes and earthquakes occur only where plates are colliding with each other

What pressure will be exerted by 0.675 moles of a gas at 25*c if it is in a 0.750-l container?

The boiling point of liquids is very high what does it indicate