A sealed room contains a mixture of air and sulfur hexafluoride gas, SF6, at a total pressure of 115.4 kPa. The air pressure in the room is 101.3 kPa. What is the partial pressure of the sulfur hexafluoride in kPa?

I'm learning about the periodic tables and what each subject's configuration is. for example, hydrogen is 1s^1, but i don't understand how you get that. can someone me understand how to figure out how to figure this out? sorry if the question makes no sense, but it would really a lot if you could me understand! you so much if you can!

Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.

The lewis diagrams for magnesium and fluorine are shown below. what is the correct chemical formula for magnesium fluoride? a. mgf b. mg2f c. mgf2 d. mg2f3