Find the concentration of a sample of a diprotic acid H2X if 21.2 mL of 0.362 M NaOH is needed to titrate 25.0 mL of the acid.
??? M

*will mark you brainliest + 15 points ** why does the equilibrium of a system shift when the pressure is increased? a. to maximize the stress on the system b. to stop restoring equilibrium to the system c. to increase the total moles of gas in the system d. to decrease the total moles of gas in the system

You are making a solution of calcium chloride dissolved in water. you add solid, stir, and it dissolves. you add just a spatula tip full, stir, and the solid does not dissolve. how could you describe the solutions before and after adding the spatula tip amount

Name the element in group 17, period 2. (periodic table)