Why do you think it’s difficult to measure the melting point of a substance?

Explanation:

It is difficult to find a melting point because very small amounts of impurity can cause the melting point to spread out over a range of several degrees. Impurities also lower the melting point of a substance; this explains why we put salt on icy sidewalks and roadways.

It is difficult to measure the melting point of a substance because very small amounts of impurity can cause the melting point to spread out over a range of several degrees.

Explanation:

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.

hi my name is ashlynn and im 15

these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.