Hoàn thành các phương trình hoá học. Fe. +. H2 SO4. ————->
Al. +. HCl——————>.

Asa choose the correct set of reaction coefficients to properly balance the following chemical equation according to the law of conservation of mass: __s8 + __o2 ==> __so2 1, 1, 8 1, 8, 1 1, 8, 8 8, 1, 1

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds

When did stem cell research become known ? who discovered stem cell? what experiments or studies have been conducted so far?