Calcule el valor de pH para cada una de las siguientes soluciones a 25ºC e indique el carácter de la solución (acida, básica o neutra). a) Una solución en que [H+] = 1.0x10-9 M
b) Una solución en que [H+] = 1.0x10-6 M
c) Una solución en que [H+] = 1.0x10-8 M

In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false

What type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? view available hint(s) what type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? salt bridge disulfide bridge hydrogen bond hydrophobic interaction

How many lone pairs of electrons are on the central atom of no3- and what is the molecular shape? one, trigonal planar zero, trigonal pyramidal zero, trigonal planar one, tetrahedral one, trigonal pyramidal