What is ∆h0 for this reaction?

br2 (g) → br2 (l)

∆hf ° br2 (g) = 30.91 kj/mol

∆H° of reaction is -30.91 KJ/mol.

Explanation:

Given data:

∆Hf ° of Br2 (g) = 30.91 KJ/mol

∆H° of reaction = ?

Solution:

we know that standard heat of formation for Br2 (l) is 0.0 KJ/mol.

Balance chemical equation:

Br2 (g) → Br2 (l)

Formula:

∆H° = ∆Hf ° (product) - ∆Hf °(reactant)

∆H° = 0.0 KJ/mol - 30.91 KJ/mol

∆H° = - 30.91 KJ/mol

hloride, what is the mass of calcium in

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).