Physics, 04.11.2019 20:31 cordovatierra16

Radioactive decay of granite and other rocks in earth's interior provides sufficient energy to keep the interior molten, to heat lava, and to provide warmth to natural hot springs. this is due to the average release of about 0.03 j per kilogram each year.

find an increase in temperature for a thermally insulated chunk of granite that takes about 12.5 million years to change temperature. (assume that the specific heat capacity c of granite is 800 j/kg⋅c∘. use the equation q=cmδt.)

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Answer from: DondreeColeman

468.75^0C

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

$Q=m\times c\times \Delta T$

Q = Heat absorbed

Given : heat released in 1 year = 0.03 J/kg

heat released in 12.5 million years= $\frac{0.03 J}{1}\times 12.5\times 10^6=375000J/kg$

m= mass of substance = 1 kg

c = specific heat capacity = 800J/kg^0C

Initial temperature of the water = T_i

Final temperature of the water = T_f

Change in temperature , $\Delta T=T_f-T_i=?$

Putting in the values, we get:

$375000J/kg=1kg\times 800J/kg^0C\times \Delta T$

$\Delta T=468.75^0C$

The increase in temperature for a thermally insulated chunk of granite is 468.75^0C

Answer from: Quest

Acetic acid /əˈsiːtɪk/, systematically named ethanoic acid /ˌɛθəˈnoʊɪk/, is a colourless liquid organic compound with the chemical formula ch3cooh (also written as ch3co2h or c2h4o2). when undiluted, it is sometimes called glacial acetic acid. vinegar is no less than 4% acetic acid by volume, making acetic acid the main component of vinegar apart from water. acetic acid has a distinctive sour taste and pungent smell. in addition to household vinegar, it is mainly produced as a precursor to polyvinyl acetate and cellulose acetate. it is classified as a weak acid since it only partially dissociates in solution, but concentrated acetic acid is corrosive and can attack the skin.acetic acidnamespreferred iupac nameacetic acidsystematic iupac nameethanoic acidother namesvinegar (when dilute); hydrogen acetate; methanecarboxylic acid[1][2]identifierscas number64-19-7 3d model (jsmol)interactive image3dmetb00009 reference506007chebichebi: 15366 chemblchembl539 chemspider171 drugbankdb03166 echa infocard100.000.528ec number200-580-7e numbere260 (preservatives)gmelin reference1380iuphar/bps1058keggd00010 meshacetic+acidpubchem cid176rtecs numberaf1225000uniiq40q9n063p un number2789inchiinchi=1s/c2h4o2/c1-2(3)4/h1h3,(h,3,4) key: qtbsbxvteameqo-uhfffaoysa-n smilescc(o)=o

Answer from: Quest

their crystal patterns have been disrupted by stress

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