An air sample in the lungs contains oxygen at 97 mmHg, nitrogen at 557 mmHg, carbon dioxide at 32 mmHg, and water vapor at 49 mmHg. What is the total pressure, in atmospheres, exerted by the gas mixture?

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25°c to 33°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170°c to -200°c. the methane freezes and the nitrogen . when gold is heated to 2,856°c it changes from a liquid to a .

What four properties do all waves have in common

Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.