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wolverine [178]
3 years ago
14

The density of a certain type of plastic is 0.81 g/cm3. If a sheet of this plastic is 10.0 m long, 1.0 m wide, and 1 cm thick, w

hat is its mass?
mass = _____ x 10_____g

g
Enter your answer in scientific notation.
Chemistry
1 answer:
crimeas [40]3 years ago
8 0

<u>Answer:</u> The mass of plastic sheet is 8.1\times 10^4g

<u>Explanation:</u>

The plastic sheet is in the form of cuboid. To calculate the volume of cuboid, we use the equation:

V=lbh

where,

V = volume of cuboid

l = length of cuboid = 10.0 m = 1000 cm     (Conversion factor: 1 m = 100 cm)

b = breadth of cuboid = 1.0 m = 100 cm

h = height of cuboid = 1 cm

Putting values in above equation, we get:

V=1000\times 100\times 1=10^5cm^3

To calculate mass of a substance, we use the equation:

\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}

We are given:

Density of plastic sheet = 0.81g/cm^3

Volume of plastic sheet = 10^5cm^3

Putting values in equation 1, we get:

0.81g/cm^3=\frac{\text{Mass of plastic sheet}}{10^5cm^3}\\\\\text{Mass of plastic sheet}=8.1\times 10^4g

Hence, the mass of plastic sheet is 8.1\times 10^4g

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