Which of the following is the definition of “bandwidth”? the maximum width of the wave; changes in bandwidth change a signal’s strength a measure of the amount of data that can be transmitted in a given amount of time, often expressed as bits per second the number of waves that pass a point in a unit of time the length of time it takes an imaginary point on a wave to go through 360°

put the answers   and i could answer.

the answer is 75.0%.

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