25cm³ of molar concetration of NaOH is diluted to 85cm³ calculate concetration of the solution after dilution ​

Where are each of the three particles located within the atom?

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

15. which of the following is not human-caused groundwater pollution? a. water in an aquifer dissolves elements such as arsenic and mercury from surrounding rock. b. water in an aquifer is contaminated by leachate that seeps into the ground from a landfill. c. water in an aquifer becomes polluted with chemicals used in hydraulic fracturing, or fracking. d. water in an aquifer absorbs harmful bacteria from the drainage field of a septic tank.