A mixture contains these parts: Sand, Sawdust, Iron pieces, Salt, and Glass marbles. Below are six steps in a process that can separate all the parts of this mixture. Put the steps in the correct order. Write '1' in front of the first step, '2' in front of the second step, and so forth. Also, write the part that will be separated as a result of each step. A few of the steps can happen at different times.

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

nuclear fission produces elements that are heavier than helium.

the elements that are used in nuclear fission and their products are much heavier than helium.