The nucleus of an atom is a. negatively charged and has a high density b. positively charged and has a high density c. positively charged and has a low density d. negatively charged and has a low density

Achemical reaction is done in the setup shown, resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent

How many moles of na2s2o3 are needed to react with 0.12mol of cl2? show work.