Select all the correct answers. What are some applications of fission reactions? as a zero-waste energy source for generating large amounts of heat for creating stable elements from unstable ones for creating new, heavier elements as the energy source in nuclear weapons

Seawater contains approximately 3.5%nacl by mass and has a density of 1.02 g/ml. what volume of seawater contains 7.5 g of sodium?

What is the number of moles in 15.0 g ash3?

The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?