A student finds two unlabeled bottles room temperature that are either CO2 or H2. Based on their appearance alone how can they determine which substance is which. Do not answer with an activity that is more than looking at the bottles. I'm confused because they are both gases and colorless

There are 6.022, 104 atoms of hg in 1 mole of hg the number of atoms in 45 moles of hg can be found by multiplying 4.5 by 6.022, 102 which is the number of atoms in 4.5 moles of hg, correctly written in scientific notation with the correct number of significant figures? 0 21,109 0 21,100 271, 1024 27.099, 100 mark this and retum save and exit submit

What term describes technology that operates on an atomic level

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory