Physics, 24.08.2019 09:10 amselah735

An engineer has the task of producing an aluminum alloy with a density of 3.0 grams per cubic centimeter. she comes up with the perfect alloy and saves a sample of it. which mass and volume measurements correspond to this sample? 7 g and 2.3 cm³ 10 g and 7 cm³ 15 g and 5 cm³ 21 g and 8 cm³

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Answer from: muratm

The correct answer is 15 g and 5cm^3

Explanation:

Density of an object is defined as the ratio of object's mass and volume.

Mathematically,

$Density=\frac{Mass}{Volume}$

We need to find the mass and volume measurements which give us the density of 3g/cm^3 . For that we find out the density in all the options and match the required density.

From the given options:

1. 7 g and 2.3 cm^3

Mass = 7 g

Volume = 2.3cm^3

Putting values in density equation, we get:

$Density=\frac{7g}{2.3cm^3}=3.04g/cm^3$

2. 10 g and 7cm^3

Mass = 10 g

Volume = 7cm^3

Putting values in density equation, we get:

$Density=\frac{10g}{7cm^3}=1.42g/cm^3$

3. 15 g and 5cm^3

Mass = 15 g

Volume = 5cm^3

Putting values in density equation, we get:

$Density=\frac{15g}{5cm^3}=3g/cm^3$

4. 21 g and 8cm^3

Mass = 21 g

Volume = 8cm^3

Putting values in density equation, we get:

$Density=\frac{21g}{8cm^3}=2.625g/cm^3$

Hence, the measurements 15g and 5m^3 give us the density as 3g/cm^3

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

The magnets would be | n s | and | s n|

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An engineer has the task of producing an aluminum alloy with a density of 3.0 grams per cubic centim...