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Chemistry Equations and Laws

# Chemistry Equations and Laws - Chapter 1 1 2 3 4 Kelvin...

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Chapter 1 1. Kelvin from Celsius: = ° + . TK t C 273 15 2. Fahrenheit from Celsius: ° = ° + t F 95t C 32 3. Celsius from Fahrenheit: ° = ( ° - ) t C 59 t F 32 4. = ( ) ( ) density d mass m volume V 5. Chapter 2 1. Law of Conservation of Mass: The total mass of substances present after a chemical reaction is the same as the total mass of substances before the reaction. 2. Law of Definite Proportions: All samples of a compound have the same composition-the same proportions by mass of the constituent elements. 3. Law of Multiple Proportions: If two elements form more than a single compound, the masses of one element combined with a fixed mass of the second are in the ratio of small whole numbers. 6. Chapter 3 1. = ×( Mass Percent Element number of atoms of element molar ) × % mass of element molar mass of compound 100 2. Chapter 4 1. = ( ) ( molarity M amount of solute in moles volume of solution in ) liters 3. × = × Mi Vi Mf Vf (For Diluting a Solution) 4. = × % Percent yield Actual yieldTheoretical yield 100 5. Chapter 8 1. = × c ν λ 2. E = h ν (Planck’s equation) 6. + = 12mu2 hv0 (Photoelectric Effect) 7. = rn n2a0 (Radii of allowed orbits in a hydrogen atom.)

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