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The easiest way to answer this question is by using the equation pH + pOH = 14. 

Firstly, we need to work out the number of moles of OH^- in the solution. As the formula for Ba(...

Nitrogen has 5 valence electrons in its outer shell. Each Hydrogen has 1 valence electron in its outer shell, so the 3 Hydrogens donate 3 electrons in total. This gives 8 valence electrons in total. We...

On the periodic table, Magnesium has the symbol ₁₂Mg²⁴, where 24 is the mass number and 12 is the atomic number. The atomic number is the number of protons found inside an atom, w...

These elements are in the same group in the periodic table due to their electron configurations:

fluorine: 2, 7

chlorine: 2, 8, 7

They both have 7 electrons in...

A disproportionation reaction is when an element is both oxidised and reduced in the same reaction. You check this by looking at the oxidation state of the element at the begining of the reaction and t...