De los siguientes conjuntos indique con una cruz los que constituyen un sistema material drogas en un botiquín solución de sulfato de cobre en agua para verificar su cristalización alcohol para desinfectar una herida hielo, vaso de precipitados, termómetro para determinar su punto de fusión. Ayuda urgente pliss

What is a property of a double replacement reaction

Which metal exist in liquid state and can be cut with knife ?

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.