Gay-Lussac law A gas of mass 0.338g occupies a volume of 40liem*at s..p. What is its relative molar mass?
Imol=22.4dm3]
What volume of 0.2M solutions of sodium hydroxide will evaporate and yield 5.Og of solid NaOH?
=16, H=!].
a. 600 cm
3
EMISTS DON'T DIE​

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explanation:

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol