The sign of the entropy for the equation Mg2+(aq) + CO32-(aq) - MgCO3(s) is positive. True or false

Which statement is true about the part of the electromagnetic spectrum that human eyes can detect? it contains only the colors of the rainbow and television waves. o it is divided into seven ranges of wavelengths. it contains ultraviolet, visible, and infrared light. it is divided into nine ranges of wavelengths.

How many neutrons does an element have if its atomic number is 50 and its mass number is 166

In the experiment you asked to react hydrochloric acid and with sodium hydroxide. when measuring the volume of the reactants, which instrument would give the greatest precision.