Calculati masa, in grame, pentru: a.0,02 moli NaHCO3

b.5X10^-3 moli NaOH

c.0,15 moli acid sulfuric

d.0,4 moli carbonat de calciu

The image shows a process that releases nuclear energy which statement best identifies the process shown the process must be fusion because energy is released the process must be fusion because of have your nucleus formed a smaller nuclei the process must be fission because a large nucleus breaks into smaller nuclei the process must be fission because neutrons are formed

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.

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat