The volume of a gas is 450 ml when its pressure is 1.00 atm. if the temperature of the gas does not change, what is the pressure when its volume is changed to 2.00 l? use  .0.225 atm0.444 atm2.25 atm4.44 atm

What phase of matter has particles that are held together but can flow past each other and takes the shape of a container, filling it from the bottom up?

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!

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false