PLEASE HELP I only need number one. I don’t even want the answer tbh I just don’t understand how to find the exact mass of an unknown element since u cant find it in the periodic table. please explain how you would solve this question

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.

i dont know the answe