(easy)+(25 points) what is the net force acting on the object (represented by the solid circle) in this diagram?

How many molecules are in 6.0 moles of methane

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?   %