Which of the following is a mass? Which is a Velocity?

25kg

2.5 meters/second ​

mass is 25

velocity is 2.5

relative humidity is a measure of the amount of moisture in the air relative to the total amount of moisture the air can hold.

so d

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume