Why is Darwin's theory of evolution considered a theory and not a law? 1.Darwin provided a correct explanation of an observed pattern in nature with evidence

2.Darwin applied the results of one experiment to explain a wide variety of
circumstances.

3. Darwin described an observed natural pattern supported by empirical evidence

4. Darwin attempted to explain the results of his experiments

d: the voltage of the secondary coil is less than that of the primary coil.

im not suree sorry if wrong

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.

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