HURRY PLEASE The density of tin is 7.3 g/cm3 and aluminum is 2.7 g/cm3. What is true about the density of a tin can that is coated with aluminum

1. Their is not enough information to determine the density of a can

2. The density is between 2.8 g/cm3 and 7.3 g/cm3

3. The density is 7.3g

4. The density is 2.7g/cm3

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year

more infor would

a lot

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