Nonrenewable resources are natural resources that are limited in supply and cannot be replaced as quickly as they are used up.
true or false

True.

Explanation:

Renewable would mean that they are limited but it would be hard to run out of. Things that would be able to be replaced in a human lifetime or less. And since non would mean the opposite, it would mean that it can be replaced in more than a human lifetime and would be a lot easier to run out of.

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

answerca air mass;