Write the equation for the decomposition of the hydrate Na₂​SO₄​⋅10H₂​O. Label the anhydrous salt.
a) Na₂​SO₄​⋅10H₂​O→Na₂​SO₄​+10H₂​O
b) Na₂​SO₄​⋅10H₂​O→Na₂​SO₄​+10H₂​O+Heat
c) Na₂​SO₄​⋅10H₂​O→Na₂​SO₄​+10H₂​O+H₂​O
d) Na₂​SO₄​⋅10H₂​O→Na₂​SO₄​+Heat