Oblicz masę każdego z produktów reakcji rozkładu 225 g tlenku magnezu jeżeli masa otrzymanego tlenu była 4 razy mniejsza od masy magnezu. 2MgO=2Mg + O2

45g tlenu i 45g magnezu
45g tlenu i 11,25g magnezu
45g magnezu i 11,2g tlenu

The modern periodic table has groups.

Schrodinger and heisenberg developed an alternate theory about atomic nature that contradicted some of bohr's model of the atom. how do changes resulting from new technology and evidence affect the reputation of the atomic theory?

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat