The mass of a proton is A: substantially greater than the mass of a neutron.

B: roughly equal to the mass of a neutron

C: substantially less than the mass of a neutron

D: twice the mass of a neutron

How many moles of n2 you have in 476 l sample at stp?

When svante arrhenius first proposed his acid-base theory, he was a doctoral candidate. his professors thought his ideas were unfounded. within a decade, the arrhenius theory of acid-base was widely accepted and praised within the scientific world. arrhenius defined acids as compounds having ionizable hydrogen and bases as compounds with ionizable a) barium. b) hydronium. c) hydroxide. d) oxygen.

Match the mixture with the substance// i really need on this guys (it’s a pic btw)