1) Is coffee hot? Testable or Not testable

2) How much does a penny weigh?
Testable or Not testable

3) Is skydiving or surfing more fun?
Testable or Not testable

4) How long does it take for a golf ball to fall 1 meter?
Testable or Not testable

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.