A science class performed an investigation by evaporating a solution containing 10g of salt and 50ml of water. How much salt would you expect to find in the cup at the end of the investigation?

Approximately 10 g due to some experimental errors..

Explanation:

Hello,

In this case, since evaporation accounts for the removal of the solvent of a solution composed by a solvent and a solute via boiling it, we can see here that the solute is the salt and the solvent is the water and by performing an evaporation the 50 mL water need to be boiled; therefore at the end of the experiment, approximately 10 g of the salt are obtained as a solid product, but in some cases we could obtain more than such amount if the evaporation was not complete or less than it if decrepitation (spitting out of the solute due to the heat) occurs as the solid could "jump" out the recipient in which the experiment is carried out.

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the first point, i am pretty sure.

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).