Which statement(s) is/are TRUE about measurement uncertainty?
SELECT ALL THAT APPLY
a
It is possible to remove all uncertainty by designing
very high quality measuring devices.
b Uncertainty makes measurements less accurate.
с
Highly accurate measurements are obtained from
measuring devices with high uncertainty.
d All measurements have some uncertainty in them.

What is avogadro’s number, and why is it useful

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

When water dissociates, each water molecule splits into a hydroxide ion and a) h 3 o + b) a hydrogen atom c) a hydrogen ion d) h 2 o e) oh —