Which equations are balanced, and how can the non-balanced ones be balanced? B. ___ H2O + ___ SO3  ___ H2SO4
C. ___ KI + ___ Cl2  ___ KCl + ___ I2
D. ___ NaHCO3  ___ Na2CO3 + ___ H2O + ___ CO2
E. ___ Zn + ___ HCl  ___ ZnCl2 + ___ H2
F. ___ BaCl2 + ___ Na2SO4  ___ BaSO4 + ___ NaCl
G. ___ C3H8 + ___ O2  ___ CO2 + ___ H2O
H. ___ Al + ___ CuCl2  ___ AlCl3 + ___ Cu

a small container that holds a source of energy a solar cell that captures light energy and converts it into electricity a voltaic cell that uses the oxidation of a fuel to produce electricity

explanation:

answer is: naturally occurring solid, inorganic compound or element is mineral.

minerals usually have crystalline form, that means than crystal constituents (atoms, molecules or ions) are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions.

for example magnetite is a mineral of iron oxide (fe₂o₃).

calcite is a carbonate mineral and the most stable polymorph of calcium carbonate (caco₃).

dolomite is an   carbonate mineral composed of calcium magnesium carbonate (camg(co₃)₂).

the answer is symmetrical : )