Aplane travels 370,000 meters in 8500 seconds. what is its speed?
o 40.3 m/s
43.5 m/s
o
38.6 m/s
0 55.5 m/s

The rock in a lead ore deposit contains 89 % pbs by mass. how many kilograms of the rock must be processed to obtain 1.5 kg of pb?

Determine the empirical formula of a compound containing 40.6 grams of carbon, 5.1 grams of hydrogen, and 54.2 grams of oxygen. in an experiment, the molar mass of the compound was determined to be 118.084 g/mol. what is the molecular formula of the compound? for both questions, show your work or explain how you determined the formulas by giving specific values used in calculations.

How air particles exert a pressure on the inside of the balloon