Each of the items pictured represents a different chemical reaction. rank these four reactions in order from fastest to slowest.

1, 3, 2, 4

4, 3, 1, 2

3, 1, 4, 2

3, 2, 4, 1
1. egg cooking: three eggs in a pan of water. 2. metal rusting: an abandoned, rusting car. 3. wood burning: a lit match. 4. cement hardening: men pour cement from cement mixer.

it is the most commonly accepted one

air

in a tire you fill a tire with air

then a couple days later you check the air pressure in the tire

hope this mark me brainliest

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