Steve races to the nearest taco stand at lunchtime and see that his pedometer recorded his peak speed at 72.9 cm/s. What was Steve's peak speed in kilometers per hour?

18. use the activity series to predict whether the following synthesis reaction will occur. write the chemical equations for the reaction if it's predicted to occur. (s) + o2(g) -> *note: it is possible.*

Which of these conditions most likely produces an unstable isotope?

Anthracite is so hard and pure it is also referred to as a renewable resource metamorphic rock hot bituminous coal dirty fuel