Calcular la normalidad de la solución de NaOH para 4 L de la solución al 25% m/m y cuya densidad sea 1,3 g/ml.

29.1-12=17.1the answer is this one

Oh nskskakaaka

They cool it down and aluminum cools easily

The reaction 2kalsi3o8 + 2(h+ + hco3-) + h2o  →  al2si2o5(oh)4 + 2k+ + 2hco3- + 4sio2 shows that feldspar kalsi3o8 is chemically altered by hydrolysis to form chalky-looking clay mineral kaolinite al2si2o5(oh)4. the chemical breakdown of potassium feldspar due to exposure to acidic water results to the mineral binding with the water molecule to become kaolinite with silica and potassium and bicarbonate ions in solution.