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Help pleaseeeee A graduated cylinder contains 20.0 mL of water. An irregularly shaped object is placed in the cylinder, and the water level rises to the 31.2 mL mark. If the object has a mass of 74.2 g, what is its density?

Respuesta :

johnkellock
Density = mass/volume

Mass = 74.2 g

Volume = 31.2 mL - 20.0 mL = 11.2 mL

Density = 74.2 g/ 11.2 mL = 6.625 g/mL

Note that in multiplication and division problems such as this one, the final answer will be rounded to the least number of significant figures (sig figs) of the original numbers (the dividend and the divisor). In this case, 74.2 and 11.2 both have three sig figs.

Thus, round 6.625 to three sig figs.

FINAL ANSWER: Density = 6.63 g/mL

Hope this helps!

Density of the irregularly shaped object, which is put into graduated cylinder contains is 6.6 g/mL.

What is density of a substance?

Density is the quantity of the mass a substance has per unit of volume. The density of a substance is the ratio of mass to the volume. It can be given as,

[tex]\rho=\dfrac{m}{v}[/tex]

Here, (m) is the mass of the substance and (v) is the volume of the substance.

A graduated cylinder contains 20.0 mL of water.

As the irregularly shaped object is placed in this cylinder, the water level rises to the 31.2 mL mark. Thus, the volume of the volume of the object is,

[tex]V_o=31.2-20\\V_o=11.2\rm mL[/tex]

Thus, the volume of the object is 11.2 mL.

As the mass of the object is 74.2 g, Thus, the density of the object can be given using the above formula as,

[tex]\rho=\dfrac{74.2}{11.2}\\\rho=6.625\rm g/mL\\\rho\cong6.6g/mL[/tex]

Thus the density of the irregularly shaped object, which is put into the graduated cylinder contains is 6.6 g/mL.

Learn more about the density here;

https://brainly.com/question/1354972

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