A 38.9 mL aliquot of weak base that has a concentration of 0.562 M will be titrated with 0.37 M HCl. Calculate the pH of of the solution upon the addition of 13.77 mL of HCl. The Kb of the base is 4.5×10-6.

Flourine is found to undergo 10% radioactivity decay in 366 minutes determine its halflife

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.