The picture below shows a type of fish that is adapted to live in the weedy areas of freshwater lakes. image Which best describes how this fish is adapted to live in the weedy areas in freshwater lakes? A. The lower fins look like the legs of a turtle. B. The mouth on the fish looks like the bottom of a lake. C. The stripes on the fish look like the plants in the water. D. The upper fin looks like another fish.

metric time was an attempt to create a standard unit of time based off of 10, but it never took off an is not included in the metric system (si)

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

answer: gold foil experiment - he shot alpha particles at a gold foil

explanation: