When a rocket engine is launched into space, it burns fuel that produces hot exhaust gases. What are the forces involved in propelling the rocket upward?

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?

3) in peaches, [oh]=3.16x10-11 m a) find [h+ ] b) what is the ph? c) is the solution acidic, basic, or neutral?

Which sample at stp has the same number of atoms as 18 liters of ne at stp