A person hears an echo from the top of a tower,2.2 seconds after the sound is produced how far away is the tower from the person? Speed of the sound in the air is 332m/s

The particles of an ice cube at 0°c (represented by the blue circles) come in contact with the particles of juan’s hand at 37°c (represented by the orange circles). which diagram correctly represents the temperature of the two substances and the direction of heat flow?

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig

The vapour pressure of benzene is 53.3 kpa at 60.6 °c, but it fell to 51.5 kpa when 19.0 g of a non-volatile organic compound was dissolved in 500 g of benzene. calculate the molar mass of the compound.