CHEM JA Fall 2017 Name KEY ID. mark \"D on scantron Points True or False (2 poin

Question

CHEM JA Fall 2017 Name KEY ID. mark "D on scantron Points True or False (2 points each) /100 London dispersion forces ane False 2. It is possible to havea Please use Expliain how the value of the constant R in the expression PRT is caultd to be 0821 Lat4 points af regions of electron desity d. Name the molecular gnometry point, equivalence point, and ( During either tration camied out ths semesten,e tinist KOH or KMnos would adding a small partion af water to your ample ad cid dihydrate ing Version

Explanation / Answer

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Answer of 1 question is TRUE because

London dispersion forces are the weakest forces it is a temporary attractive force that results when the electrons in two adjacent atoms occupy positions that make the atoms form temporary dipoles.

Answer 2 TRUE because

It is possible to have non polar bonds in a polar molecule for example CH3Cl

In this c-cl bond in polar so the compound is polar but rest 3 c-h bonds are non polars

Answer 3

1 mole of an ideal gas at the standard temperature, 273 Kelvin and pressure, 1 atmosphere, will occupy a volume of 22.4 liters. Once you have all of that information you can solve for R mathematically starting from the ideal gas formula PV=nRT.

R=PV/nT or R=(1atm*22.4L)/(1mol*273K); R=0.0821(atm*L)/(mol*K)

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