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Sagot :
The formula for density d is given by
[tex]d=\frac{M}{V}[/tex]where M is the mass and V is the volume.
Lets start !
- Mercury
[tex]d=\frac{3000}{220.58}=13.6\text{ }\frac{gr}{\operatorname{cm}\mleft\lbrace^3\mright?}[/tex]- Iron
[tex]d=\frac{750}{96.2}=7.79\frac{gr}{\operatorname{cm}\mleft\lbrace^3\mright?}[/tex]- Lead
[tex]d=\frac{1800.9}{159.3}=11.31\frac{gr}{\operatorname{cm}\mleft\lbrace^{}^3\mright?}[/tex]- Gold
[tex]d=\frac{85}{44}=1.93\frac{gr}{\operatorname{cm}\mleft\lbrace^3\mright?}[/tex]- Aluminum
[tex]d=\frac{150.12}{55.6}=2.7\frac{gr}{\operatorname{cm}\lbrace^3}[/tex]- Copper
[tex]d=\frac{275}{30.89}=8.9\frac{gr}{\operatorname{cm}\lbrace^3}[/tex]- Marble
[tex]d=\frac{12350}{4750}=2.6\frac{gr}{\operatorname{cm}\lbrace^3}[/tex]- Wood
[tex]d=\frac{5000}{7692}=0.65\frac{gr}{\operatorname{cm}\lbrace^3}[/tex]- Concrete
[tex]d=\frac{15250}{6630.4}=2.3\frac{gr}{\operatorname{cm}\lbrace^3}[/tex]Now, lets go to organize the density from least dense to most dense. From our previous result, the organized table is:
1. Wood
2. Gold
3. Concrete
4. Marble
5. Aluminum
6. Iron
7 Copper
8. Lead
9. Mercury
Which materials will sink in water? Water density is about 1 gr/cm^3, so more dense materials will sink in water. In our case, those materials are: Gold, Concrete, Marble, Aluminum, Iron, Copper, Lead and Mercury
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