One radioactive isotope of calcium has an atomic mass number of 47. how many neutrons are in the calcium-47 nucleus?

The climate of the continental united states is generally 1. tropical 2. temperate 3. arctic 4. highland

Polar bears give birth and hunt on sea ice. which of the following would polar bears survive during the melting of arctic ice? growing another layer of fur during summer migrate inland to search for different food sources staying put until the ice refreezes sticking to the usual diet of seals

What is the volume of 2.5 moles of nitrogen gas (n2)at standard temperature and pressure (stp)?