Which statement about the density of cold water is most likely correct? a) cold water is more dense than warm water. b) cold water is less dense than warm water. c) the density is the same for warm and cold water. d) the density will sometimes be higher for cold water and other times higher for warm water.

the answer is A) Cold water is more dense than warm water

Option (A) is the correct answer.

Explanation:

Density is defined as the mass of a substance divided by the volume of the substance.

Mathematically,    Density =

In cold water, molecules are more closer to each other due to which there occurs increase in mass of the substance. As density is proportional to mass of the substance. So, density of cold water will be more.

On the other hand, in warm water molecules have more kinetic energy so, there will be more number of collisions. As a result, molecules will move away from each other due to which there will be decrease in density.

Thus, we can conclude that the statement cold water is more dense than warm water, is true about the density of cold water.

it should be all of them because it asks if you included all of those in your answer

explanation:

most historians agree that gabriel mouton, the vicar of st. paul’s church in lyons, france, is the “founding father” of the metric system. he proposed a decimal system of measurement in 1670. mouton based it on the length of one minute of arc of a great circle of the earth (now called a nautical mile, 1852 meters). he also proposed the swing-length of a pendulum with a frequency of one beat per second as the unit of length (about 25 cm). a pendulum beating with this length would have been fairly easy to produce, thus facilitating the widespread distribution of uniform standards. over the years, his work was revised, improved, and extended by a number of french scientists.

the political sponsor of weights and measures reform in the french revolutionary national assembly was the bishop of autun, better known as talleyrand. under his auspices, the french academy appointed several committees to carry out the work of developing a usable system of weights and measures for france. one of the committees recommended a decimalized measurement system based upon a length equal to one ten-millionth of the length of a quadrant of the earth’s meridian (i.e., one ten-millionth of the distance between the equator and the north pole).