Match each chemical or physical property with its significance or impact. A. Flammable range

1. Used to determine the minimum temperature at which sufficient vapors
of a flammable liquid generate a fire hazard

B. Specific gravity

2. Used to determine effective extinguishing agents and methods

C. Vapor density

3. Used to determine spill control and clean-up procedures for water-
borne releases

D. Solubility

4. Used to determine where an air-borne material will travel

E. Flash point

5. Used to determine whether combustion is a potential hazard

your answer is c) plasma

~*"auba14"*~

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