Which of the following is an example of a derived unit? a
miles per hour
Kelvin
b
С
feet
d
liters

Smog is the term used to describe the combination of fog and smoke

Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?

If a molecule with a molecular formula of c13h18 is treated with an excess of h2 in the presence of finally divided pt metal under conditions required for maximum hydrogenation of the molecule to give a molecule with a formula c13h24, how many rings are in the molecule?