12.2.5 Que Properties of Matter Question 2 of 10
The surface tension of isopropyl alcohol in air has a value of 22 39 units and
the surface tension of water in air is 72.86 units. Which iwo statements are
true?
A sopropyl alcohol will have a more curved meniscus than water
because the forces between the molecules are greater
B. Isopropyl alcohol will have a higher boiling point than water
because the forces between the molecules are greater
o Isopropyl alcohol will have a flatter meniscus than water because
the forces between the molecules are smaller
D. Isopropyl alcohol will have a lower boiling point than water
because the forces between the molecules are smaller

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

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).

gas

explanation:

smoke is the matter of a gas

може ли да зареждате повече информация, моля