1which best defines concentration? a ratio that describes the amount of solute divided by the amount of solvent or solutionb ratio that describes the amount of solvent or solution divided by the amount of solute c ratio that describes the mass of solute divided by the mass of solvent d ratio that describes the amount of solvent in a solution 2 which contributes to the dissolution of sugar in water? a the dissociation of an ionic compound in waterb a strong pull of water molecules on an ionic compoundc the dissociation of a polar covalent compound in waterd a strong pull of water molecules on a polar covalent compound

1 Which best defines concentration?A ratio that describes the amount of solute divided by the amount of solvent or solutionB ratio that describes the amount of solvent or solution divided by the amount of solute C ratio that describes the mass of solute divided by the mass of solvent D ratio that describes the amount of solvent in a solution

ANSWER: (A) ratio that describes the amount of solute divided by the amount of solvent or solution

2 Which contributes to the dissolution of sugar in water?A the dissociation of an ionic compound in waterB a strong pull of water molecules on an ionic compoundC the dissociation of a polar covalent compound in waterD a strong pull of water molecules on a polar covalent compound

ANSWER: (D) a strong pull of water molecules on a polar covalent compound

ratio that describes the amount of solute divided by the amount of solvent or solution

Explanation:

pie chart because it is in percents ( % )

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).