Question 12

increasing the surface area of a solid

a)slows the speed of dissolving

b)has no effect on the speed of dissolving

c)increases the speed of dissolving

d)causes the solid to ionize

C)increases the speed of dissolving

Increasing the surface area of a solid C) increases the speed of dissolving.

Expanding the surface area builds the pace of dissolvability of a strong on the grounds that a bigger number of atoms of the more prominent surface region have contact with the dissolvable.

If a huge compound of solid must be dissolved, in order to increase the surface area, it must be broken in small pieces. We would do this to expand how rapidly the solute would break up in arrangement. If you somehow managed to break up sugar in water, a sugar cube will disintegrate slower than an equivalent measure of little bits of sugar crystals.

The joined surface territory of the majority of the sugar crystals has a lot more prominent surface zone than the one sugar solid shape and along these lines will have more contact with the water atoms. This enables the sugar crystals to break down considerably more rapidly.

the sugar-phosphate backbone forms the structural framework of nucleic acids, including dna and rna. this backbone is composed of alternating sugar and phosphate groups, and defines directionality of the molecule.

a fossil fuel is a fuel formed by natural processes, such as anaerobic decomposition of buried dead organisms, containing energy originating in ancient photosynthesis.[1] the age of the organisms and their resulting fossil fuels is typically millions of years, and sometimes exceeds 650 million years.[2] fossil fuels contain high percentages of carbon and include petroleum, coal, and natural gas.[3] other commonly used derivatives include kerosene and propane. fossil fuels range from volatile materials with low carbon to hydrogen ratios like methane, to liquids like petroleum, to nonvolatile materials composed of almost pure carbon, like anthracite coal. methane can be found in hydrocarbon fields either alone, associated with oil, or in the form of methane clathrates.

the theory that fossil fuels formed from the fossilized remains of dead plants by exposure to heat and pressure in the earth's crust over millions of years was first introduced by andreas libavius "in his 1597 alchemia [alchymia]" and later by mikhail lomonosov "as early as 1757 and certainly by 1763".[4] the first use of the term "fossil fuel" was by the german chemist caspar neumann, in english translation in 1759.[5]

in 2017 the world's primary energy sources consisted of petroleum (34%), coal (28%), natural gas (23%), amounting to an 85% share for fossil fuels in primary energy consumption in the world.[6] non-fossil sources in 2006 included nuclear (8.5%), hydroelectric (6.3%), and others (geothermal, solar, tidal, wind, wood, waste) amounting to 0.9%.[7] world energy consumption was growing at about 2.3% per year. in 2015 about 18% of worldwide consumption was from renewable sources.[8]