It takes 100,000 years for a plate to move about 2 kilometers. What is that plate's rate of motion in centimeters per year? Write and solve an equation, using the variable s for speed.

Scientists are often interested in knowing the molar heat of combustion – the heat released during the combustion of one mole of a substance. use the periodic table to find molar masses. how many moles of ethanol are present in the sample?