When 25.2 grams of H2 are reacted with an unlimited amount of O2? *
2H2 + O2 → 2 H,0 AHrxn = -241.83 kJ

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

Why does earth rotate? because earth is formed from cold gases collapsing due to gravity because the matter in the nebula that formed earth was spinning because earth forms more than 99% of the mass of the solar system because the hydrogen atoms inside the nebula fused to form helium

How many moles are contained in 5.6 l of h2 at stp