What is the speed of sound in solid?
a)200m/s
b)500m/s
c)2000m/s
d)3000m/s​

Calculate the expected ph values of the buffer systems from the experiments (a, b,c, d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.

What is the atomic mass of an atom that has 6 protons, 6 neutrons, and 6 electrons? a) 6 b) 8 c) + 1 d) 12 e) 18

According to the tide table below what time of day will the highest tide occur? (2 pt) the highest tide will occur at