Write the electronic configuration of elements from Hydrogen to Calcium ans as fast as you can

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

What is the main reason why some developing countries fear the increase the free trade policies around the world?

A4.86 g piece of metal was placed in a graduated cylinder containing 15.5 ml of water. the water level rose to 17.3 ml. what is the density of the metal. i need the steps of how to solve it to so i can use a formula to work out other problems.