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KATRIN_1 [288]
3 years ago
14

A rectangular block of copper has a mass of 143.584 g and measures 5.05 cm by 2.55 cm by 1.25 cm. Find the density of the copper

block.
Chemistry
2 answers:
Luba_88 [7]3 years ago
7 0
Density=mass/volume
Volume= 5.05 x 2.55 x 1.25 = 16.096875 cm^3

Density= 143.584/16.096875 
                                               = 8.919992235 g/cm^3

IRISSAK [1]3 years ago
5 0

Answer: The density of copper block is, 8.92 g/mL

Explanation :  Given,

Length of copper block = 5.05 cm

Breadth of copper block = 2.55 cm

Height of copper block = 1.25 cm

To calculate the volume of copper block by using the formula of volume of cuboid, we use the equation:

V=lbh

where,

V = volume

l = length

b = breadth

h = height

Putting values in above equation, we get:

V=5.05cm\times 2.55cm\times 1.25cm=16.1cm^3=16.1mL

Conversion used : 1cm^3=1mL

Now we have to calculate the density of copper block.

Formula used :

Density=\frac{Mass}{Volume}

Given:

Mass of copper block = 143.584 g

Volume of copper block = 16.1 mL

Now put all the given values in this formula, we get:

Density=\frac{143.584g}{16.1mL}=8.92g/mL

Therefore, the density of copper block is 8.92 g/mL

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<u>Answer:</u> The concentration of Sn^{2+} in the cell is 9.0\times 10^{-3}M

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Putting values in above equation, we get:

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[Sn^{2+}]=9.0\times 10^{-3}M

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