What happens when two sound waves meet in constructive interference? A. The frequency increases.
B. The sound disappears.
C. The sound gets softer.
D. The sound gets louder.

In an exothermic reaction, energy may be released to the surroundings in the form of question 4 options: heat light thermal all of the above

The following questions a24 - a26 relate to 100 ml of 0.0150 m solution of benzoic acid (c6h3cooh). ka(c6h3cooh) = 6.4 x 10^-5. what is the ph of the solution after the addition of 1 x 10^-3 moles of naoh? you may assume no volume change to the solution upon addition of the naoh.

Water is a highly important natural resource. which of these would be the best method to conserve water? a) drinking bottled water b) monitoring the ph of rivers c) treating and re-using wastewater d) testing nitrate levels in groundwater