Your Last Review of 2011-2012 Semester Get your notebook!

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Presentation transcript:

Your Last Review of Semester Get your notebook!

Understanding your variables λ= wavelength (measured in meters) v= frequency (measured in Hz, (1/s), s -1 ) c= speed of light (3.00x10 8 m/s or 3.00E8 m/s) h= Planck’s constant (6.626x Jxs) E= energy (measured in Joules) Equations: c= λv v=c/ λ λ=c/v E=hv E/h=v

Practice Problems The wavelength of one photon of energy is 75 m. What is the frequency? The frequency of one photon of energy is 9.1MHz. What is the energy? The wavelength of one photon of energy is 105 m. What is the energy?

Determining Variables Amount of HF Percent of Corrosion Sample 10g0% Sample 220g12.70% Sample 340g22.10% Sample 460g35.60%

What element is if it has a mass of grams and a volume of cm 3 ? ElementAuFePdCa Density (g/cm 2 )

Boyle’s Law P 1 V 1 =P 2 V 2 The original pressure and volume is 4.2 atm and 35 L respectively. What is the new volume if the pressure decreased to 0.7 atm?

Charles’ Law V 1 /T 1 =V 2 /T 2 A container has a volume of 2.8 L at 300 K. What is the new temperature if the volume decreases to 0.6L?

Gay-Lussac’s Law P 1 /T 1 =P 2 /T 2 The pressure inside a tire is 4 atm at 315K. What is the new pressure if the temperature decreases to 273K?

Phases SolidLiquid Gas

ONE LAST THING! Get lots of rest! Have a great breakfast. Make sure you are hydrated. Review your notes, practice the questions that are online, and be sure to do all of the calculations. BRING YOUR OWN PENCILS!!!! We will not supply you with one.