# Properties of gases(diffusion and pressure)

Classified in Chemistry

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**Chem Cheat Sheet**

**Mol = M*L**

**m = mol/Kg**

**Strong Acids**

**HCL hydrochloric**

**H2SO4 sulfuric**

**HNO3 nitric**

**HBR hydrobromic**

**HI hydroiodic**

**HCLO4 perchloric**

**Cp H2O (l) = 4.184**

**Cp H2O (s) = 2.03**

**Cp H2O (g) = 1.998**

**ΔHfusion of H20 = 6.02**

**ΔHvap of H20 = 40.7**

1.An amorphous solid still has all the properties of a solid except for its ___________ _______________:disorganized arrangement

**2.At STP, 1 mol =:22.4L**

**3.At STP, P=:1atm**

**4.At STP, T=:273K**

**5.avogadro's number:6.0221409x10^2**

**6.Boyle's Law:PV=PV (inversely proportional - as P↑, V↓)**

**7.Charles' Law:V/T = V/T (directly proportional - as P↑, V↑)**

**8.Combined Gas Law:PV/T = PV/T (T must be K, everything else whatever)**

**9.Dalton's Law of Partial Pressure:Pressure(total) = Pressure(a) + Pressure(b)**

10.Equation for solving phase changes (Ex. If you had 100g of liquid water at 100 C, how much energy would it take to boil the water if the ΔH vap of water is 40.7kJ/mol):q=m*ΔH(fus/vap)

11.equation for solving with/for specific heat (Ex. How many joules ( J ) are required to heat 1000g of water from room temperature (25C) to 100C?):q=mcΔT

**12.Gai-Lussac's Law:P/T = P/T (directly proportional - as P↑, V↑)**

**13.Graham's Law:as m↑, v↓ (inversely proportional)**

**14.Ideal gases are far apart at _______ temperatures:low**

**15.Ideal gases do not have attractive forces at _______ tempersatures:high**

**16.Ideal Gas Law:PV=nRT (R=8.314, P=kPa, V= L/dm^3, n=# of mol, T=K)**

**17.inter is strong or weak:weak**

**18.intra is strong or weak:strong**

**19.nonpolar molecules:e- shared equally (not shared equally in polar)**

**20.Real gases are not always far apart at ______temperatures:high**

**21.Real gases do have attractive forces at __________ temperatures:low**

**22.solution:homogeneous micture**

**23.solvent:substance that dissolves the solute**

**24.symbol for specific heat capacity:Cp**

**25.what does "like dissolves like" mean:polar + polar = solution**

**nonpolar + nonpolar = solution**

**polar + nonpolar = suspension**

**26.ΔH fusion of H2O:6.02**

**27.ΔH vaporization of H2O:40.7**