A student mixed 20 g of 45°C water with 60 g of 75°C water. The final temperature was 32°C. Calculate the change of temperature for the cold water.

List the two type of transporst that the cell in orde to transport molecules acroos the membrane

Which description best characterizes the motion of particles in a solid?

Mercury metal is poured into a graduated cylinder that holds exactly 22.5 ml the mercury used to fill the cylinder mass in 306.0 g from this information calculate the density of mercury