What happens when a base dissolves? O A. It is no longer dangerous.
O B. It adds oxygen to the solution.
O C. It increases the concentration of OH in solution.
O D. It increases the concentration of H+ in solution.
SUE

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?

Why do lunar and solar eclipse not happen every month

Iron (fe) reacts with copper sulfate (cuso4) to form iron (ii) sulfate. in this reaction, cu2+ gains electrons to form cu. which statement is true about this reaction? fe(s) + cuso4(aq) → feso4(aq) + cu(s)