Which element would most likely be a shiny solid at room temperature and have a high density? kr or br cu or f

If 1.63 times 10 negative 4 of helium dissolves in 100.0g of water, what is the concentration in parts per million

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at

Areaction in which products can react to re-form reactants is