Indicator paper can be used to measure the of a solution. indicators are substances that are different depending on the ph of the solution tested. another way to measure the acidity of the solution is the , which uses electrodes placed in solution to directly read the results.

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?

How have the greenhouse gasses increased from the year 2000 to 2018

What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?