How many moles of a gas sample are in a 20.0 l container at 373 k and 203 kpa? the gas constant is 8.31 l-kpa/mol-k. 0.33 moles 3.05 moles 1.30 moles 0.65 moles

What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?

Air pressure is measured in pascals. for a professional american football game, the ball should be inflated to about 90,000 pascals. scientists studied the effects of air temperature on the pressure inside american footballs by taking these steps: 1. prepare 100 footballs. 2. measure each football's air pressure. 3. divide footballs into 10 groups. 4. place the groups in different lockers cooled to different air temperatures. 5. after 12 hours, remove the footballs from lockers. 6. measure each football's pressure again. 7. compare the new pressures to the starting pressures. what two terms best describe the variable "air pressure inside the football" in this experiment? independent, qualitative independent, quantitative dependent, qualitative dependent, quantitative

Which of these natural resources is non-renewable a.corn b.wind c.geothermal d.natural gas