Si se tiene una disolución acuosa de sulfato de cobre, cuya concentración es de 8,9 molar y se necesita preparar 0.74 L de disolución, pero concentración de 2 molar ¿Cómo prepararías dicha solución?​

Order the following from smallest to largest atom, electron, quark, proton, neutron, molecule, nucleus

Drive down any three characteristic of modern periodic table

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.