How many atoms are in the 1.25 x 10-2 mol of mercury within the bulb of a thermometer?

What is the ima of the 1 st class lever in the graphic given? 2 3 0.5

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

Displacement is the slope of a velocity vs. time graph a. true b. false