Which components of a galaxy exist in the space between the stars? 1.Planets and gas
2.Gas and dust
3.Moons and dust
4.Stars and planets

Which metals are called noble metals

How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process

Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g.  what is the percent by mass of water in the hydrate?   %