I need help ASAP plz no links

B) Ca + 2 H2O = Ca(OH)2 + H2

Explanation:

Basically, just make sure  the number of atoms on left match the number of atoms on right.

On left: 1 Ca, 4 H, 2O

On right: 1 Ca, 4H, 2O

Balanced!

Its B-

Explanation:

Already balanced

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).

while cooking a piece of 1/2 pound beef steak, a cast iron pan (2.4kg in weight) was heated 260 celsius.